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NOTICE OF INCORPORATION
United States Legal Document
J^" All citizens and residents are hereby advised that
this is a legally binding document duly incorporated by
reference and that failure to comply with such
requirements as hereby detailed within may subject you
to criminal or civil penalties under the law. Ignorance of
the law shall not excuse noncompliance and it is the
responsibility of the citizens to inform themselves as to
the laws that are enacted in the United States of America
and in the states and cities contained therein. "^&
* *
ICC IECC (2003) , the International Energy
Conservation Code, as mandated by and incorporated
by the States and Municipalities, including
Oklahoma, West Virginia, et. alia.
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2003 International Energy Conservation Code®
First Printing: January 2003
Second Printing: April 2003
Third Printing: September 2003
Fourth Printing: April 2004
Fifth Printing: November 2004
Sixth Printing: December 2005
ISBN # 1-892395-68-1 (soft)
ISBN # 1-892395-67-3 (loose-leaf)
ISBN # 1-892395-85-1 (e-document)
COPYRIGHT © 2003
by
INTERNATIONAL CODE COUNCIL, INC.
ALL RIGHTS RESERVED. This 2003 International Energy Conservation Code® is a copyrighted work owned by the International
Code Council, Inc. Without advance written permission from the copyright owner, no part of this book may be reproduced, distrib-
uted, or transmitted in any form or by any means, including, without limitation, electronic, optical or mechanical means (by way of
example and not limitation, photocopying, or recording by or in an information storage retrieval system). For information on per-
mission to copy material exceeding fair use, please contact: Publications, 405 1 West Flossmoor Road, Country Club Hills, IL
60478-5795 (Phone 800-214-4321).
Trademarks: "International Code Council," the "International Code Council" logo and the "International Energy Conservation
Code" are trademarks of the International Code Council, Inc.
PRINTED IN THE U.S.A.
PREFAI
Internationally, code officials recognize the need for a modern, up-to-date energy conservation code addressing the design of en-
ergy-efficient building envelopes and installation of energy efficient mechanical, lighting and power systems through requirements
emphasizing performance. The International Energy Conservation Code®, in this 2003 edition, is designed to meet these needs
through model code regulations that will result in the optimal utilization of fossil fuel and nondepletable resources in all communi-
ties, large and small.
This comprehensive energy conservation code establishes minimum regulations for energy efficient buildings using prescriptive
and performance-related provisions. It is founded on broad-based principles that make possible the use of new materials and new en-
ergy efficient designs. This 2003 edition is fully compatible with all the International Codes ("I-Codes") published by the Interna-
tional Code Council (ICC), including the International Building Code, ICC Electrical Code, International Existing Building Code,
International Fire Code, International Fuel Gas Code, International Mechanical Code, ICC Performance Code, International
Plumbing Code, International Private Sewage Disposal Code, International Property Maintenance Code, International Residen-
tial Code, International Urban-Wildland Interface Code and International Zoning Code.
The International Energy Conservation Code provisions provide many benefits, among which is the model code development
process that offers an international forum for energy professionals to discuss performance and prescriptive code requirements. This
forum provides an excellent arena to debate proposed revisions. This model code also encourages international consistency in the
application of provisions.
The first edition of the International Energy Conservation Code (1 998) was based on the 1995 edition of the Model Energy Code
promulgated by the Council of American Building Officials (CABO) and included changes approved through the CABO Code De-
velopment Procedures through 1997. CABO assigned all rights and responsibilities to the International Code Council and its three
statutory members: Building Officials and Code Administrators International, Inc. (BOCA), International Conference of Building
Officials (ICBO) and Southern Building Code Congress International (SBCCI). This 2003 edition presents the code as originally is-
sued, with changes approved through the ICC Code Development Process through 2002. A new edition such as this is promulgated
every three years.
With the development and publication of the family of International Codes in 2000, the continued development and maintenance
of the model codes individually promulgated by BOCA ("BOCA National Codes"), ICBO ("Uniform Codes") and SBCCI ("Stan-
dard Codes") was discontinued. This 2003 International Energy Conservation Code, as well as its predecessor — the 2000 edi-
tion — is intended to be the successor energy conservation code to those codes previously developed by BOCA, ICBO and SBCCI.
The development of a single set of comprehensive and coordinated International Codes was a significant milestone in the devel-
opment of regulations for the built environment. The timing of this publication mirrors a milestone in the change in structure of the
model codes, namely, the pending Consolidation of BOCA, ICBO and SBCCI into the ICC. The activities and services previously
provided by the individual model code organizations will be the responsibility of the Consolidated ICC.
This code is founded on principles intended to establish provisions consistent with the scope of an energy conservation code that
adequately conserves energy; provisions that do not unnecessarily increase construction costs; provisions that do not restrict the use
of new materials, products or methods of construction; and provisions that do not give preferential treatment to particular types or
classes of materials, products or methods of construction.
ActoptSom
The International Energy Conservation Code is available for adoption and use by jurisdictions internationally. Its use within a gov-
ernmental jurisdiction is intended to be accomplished through adoption by reference in accordance with proceedings establishing
the jurisdiction's laws. At the time of adoption, jurisdictions should insert the appropriate information in provisions requiring spe-
cific local information, such as the name of the adopting jurisdiction. These locations are shown in bracketed words in small capital
letters in the code and in the sample ordinance. The sample adoption ordinance on page v addresses several key elements of a code
adoption ordinance, including the information required for insertion into the code text.
The International Energy Conservation Code is kept up to date through the review of proposed changes submitted by code enforc-
ing officials, industry representatives, design professionals and other interested parties. Proposed changes are carefully considered
through an open code development process in which all interested and affected parties may participate.
2003 INTERNATIONAL ENERGY CONSERVATION CODE® iii
The contents of this work are subject to change both through the Code Development Cycles and the governmental body that en-
acts the code into law. For more information regarding the code development process, contact the Code and Standard Development
Department of the International Code Council.
While the development procedure of the International Energy Conservation Code assures the highest degree of care, ICC and the
founding members of ICC — BOCA, ICBO, SBCCI — their members, and those participating in the development of this code do not
accept any liability resulting from compliance or noncompliance with the provisions because ICC and its founding members do not
have the power or authority to police or enforce compliance with the contents of this code. Only the governmental body that enacts
the code into law has such authority.
Letter Designations in Front of Section Numbers
In each code development cycle, proposed changes to this code are considered at the Code Development Hearing by the Interna-
tional Energy Conservation Code Development Committee, whose action constitutes a recommendation to the voting membership
for final action on the proposed change. Proposed changes to a code section whose number begins with a letter in brackets are con-
sidered by a different code development committee. For instance, proposed changes to code sections which have the letter [EB] in
front (e.g., [EB] 101 .2.2.1), are considered by the International Existing Building Code Development Committee at the Code Devel-
opment Hearing. Where this designation is applicable to the entire content of a main section of the code, the designation appears at
the main section number and title and is not repeated at every subsection in that section.
The content of sections in this code which begin with a letter designation is maintained by another code development committee
in accordance with the following: [B] = International Building Code Development Committee; [EB] = International Existing Build-
ing Code Development Committee and [M] = International Mechanical Code Development Committee.
Marginal Markings
Solid vertical lines in the margins within the body of the code indicate a technical change from the requirements of the 2000 edition.
Deletion indicators ( ^ ) are provided in the margin where a paragraph or item has been deleted.
2003 INTERNATIONAL ENERGY CONSERVATION CODE 18
The International Codes are designed and promulgated to be adopted by reference by ordinance. Jurisdictions wishing to adopt the
2003 International Energy Conservation Code as an enforceable regulation governing energy efficient building envelopes and in-
stallation of energy efficient mechanical, lighting and power systems should ensure that certain factual information is included in
the adopting ordinance at the time adoption is being considered by the appropriate governmental body. The following sample
adoption ordinance addresses several key elements of a code adoption ordinance, including the information required for insertion
into the code text.
An ordinance of the [JURISDICTION] adopting the 2003 edition of the International Energy Conservation Code, regulating and
governing energy efficient building envelopes and installation of energy efficient mechanical, lighting and power systems in the
[JURISDICTION]; providing for the issuance of permits and collection of fees therefor; repealing Ordinance No. of the
USD1CT10N] and all other ordinances and parts of the ordinances in conflict therewith.
The [GOVERNING BODY] of the [JURISDICTION] does ordain as follows:
Section l.That a certain document, three (3) copies of which are on file in the office of the [TITLE OF JURISDICTION'S KEEPER OF
RECORDS] of [NAME OF JURISDICTION] , being marked and designated as the International Energy Conservation Code, 2003 edi-
tion, including the Appendix [FILL IN TBHIE APPENDIX DETAILS BEING ADOPTED], as published by the International Code Council,
be and is hereby adopted as the Energy Conservation Code of the [JURISDICTION], in the State of [STATE NAME] for regulating and
governing energy efficient building envelopes and installation of energy efficient mechanical, lighting and power systems as
herein provided; providing for the issuance of permits and collection of fees therefor; and each and all of the regulations, provi-
sions, penalties, conditions and terms of said Energy Conservation Code on file in the office of the [JURISDICTION] are hereby re-
ferred to, adopted, and made a part hereof, as if fully set out in this ordinance, with the additions, insertions, deletions and changes,
if any, prescribed in Section 2 of this ordinance.
Section 2. The following sections are hereby revised:
Section 101.1. Insert: [NAME OF JURISDICTION].
Section 3.That Ordinance No. of [JURISDICTION] entitled [FILL IN HERE THE COMPLETE TITLE OF THE ORDINANCE OR
ORDINANCES IN EFFECT AT THE PRESENT TIME SO THAT THEY WILL BE REPEALED BY DEFINITE MENTION] and all other ordi-
nances or parts of ordinances in conflict herewith are hereby repealed.
Section 4.That if any section, subsection, sentence, clause or phrase of this ordinance is, for any reason, held to be unconstitutional,
such decision shall not affect the validity of the remaining portions of this ordinance. The [GOVERNING BODY] hereby declares that
it would have passed this ordinance, and each section, subsection, clause or phrase thereof, irrespective of the fact that any one or
more sections, subsections, sentences, clauses and phrases be declared unconstitutional.
Section 5. That nothing in this ordinance or in the Energy Conservation Code hereby adopted shall be construed to affect any suit or
proceeding impending in any court, or any rights acquired, or liability incurred, or any cause or causes of action acquired or exist-
ing, under any act or ordinance hereby repealed as cited in Section 2 of this ordinance; nor shall any just or legal right or remedy of
any character be lost, impaired or affected by this ordinance.
Section <S.That the [JURISDICTION'S KEEPER OF RECORDS] is hereby ordered and directed to cause this ordinance to be pub-
lished. (An additional provision may be required to direct the number of times the ordinance is to be published and to specify that it
is to be in a newspaper in general circulation. Posting may also be required.)
Section 7.That this ordinance and the rules, regulations, provisions, requirements, orders and matters established and adopted
hereby shall take effect and be in full force and effect [TIME PERIOD] from and after the date of its final passage and adoption.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
TABLE ©I
1 ADMINISTRATION...... ......... 1
Section
101 General 1
102 Materials, Systems and Equipment 2
103 Alternate Materials — Method of
Construction, Design or Insulating
Systems 3
104 Construction Documents 4
105 Inspections 4
106 Validity 4
107 Referenced Standards 4
CHAP1
Section
201 General 5
202 General Definitions 5
CHAPTER 3 DESIGN CONDITIONS. .......... 11
Section
301 General 11
302 Thermal Design Parameters 11
CHAPTER 4 RESIDENTIAL BUILDING DESIGN
1Y SYSTEMS ANALYSIS .
DESIGN OF :
UTILIZING :
ENERGY SOURCES ............. 13
Section
401 Genera] 13
402 Systems Analysis 13
CHAPTER 5 RESIDENTIAL BUILDING DESIGN
E
17
Section
501 General 17
502 Building Envelope Requirements 17
503 Building Mechanical Systems and
Equipment 37
504 Service Water Heating 42
505 Electrical Power and Lighting 43
CHAPTER <S SIMPLIFIED PRESCRIPTIVE
REQUIREMENTS FOR DETACHED
TWO-FAMILY
OR TOWNHOUSE RESIDENTIAL
BUILDINGS. .................... 45
Section
601 General 45
602 Building Envelope 45
603 Mechanical Systems 50
604 Service Water Heating 50
605 Electrical Power and Lighting 50
CHAPTER 7 BUILDING DESIGN FOR ALL
Section
701 General
CHAPTER 8 DESIGN BY ACCEPTABLE
51
Section
801 General 53
802 Building Envelope Requirements 53
803 Building Mechanical Systems 59
804 Service Water Heating 72
805 Electrical Power and Lighting Systems 74
806 Total Building Performance 75
CHAPTER 9 CLIMATE MAPS ....... .... 145
Section
901 General 145
902 Climate Zones 145
CHAPTER 1© REFERENCED STANDARDS . . .
INDEX . ,
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
VII
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
CHAPTER 1
ADMINISTRATION
SECTION 101
GENERAL
101.1 Title. These regulations shall be known as the Energy
Conservation Code of [NAME OF JURISDICTION], and shall be
cited as such. It is referred to herein as "this code."
101.2 Scope. This code establishes minimum prescriptive and
performance-related regulations for the design of energy-effi-
cient buildings and structures or portions thereof that provide
facilities or shelter for public assembly, educational, business,
mercantile, institutional, storage and residential occupancies,
as well as those portions of factory and industrial occupancies
designed primarily for human occupancy. This code thereby
addresses the design of energy-efficient building envelopes and
the selection and installation of energy-efficient mechanical,
service water-heating, electrical distribution and illumination
systems and equipment for the effective use of energy in these
buildings and structures.
n: Energy conservation systems and components
in existing buildings undergoing repair, alteration or addi-
tions, and change of occupancy, shall be permitted to com-
ply with the International Existing Building Code.
101.2.1 Exempt buildings. Buildings and structures indi-
cated in Sections 101.2.1.1 and 101.2.1.2 shall be exempt
from the building envelope provisions of this code, but shall
comply with the provisions for building, mechanical, ser-
vice water heating and lighting systems.
101.2.1.1 Separated buildings. Buildings and struc-
tures, or portions thereof separated by building envelope
assemblies from the remainder of the building, that have
apeak design rate of energy usage less than 3.4 Btu/h per
square foot (10.7 W/m 2 ) or 1 .0 watt per square foot (10.7
W/m 2 ) of floor area for space conditioning purposes.
101.2.1.2 Unconditioned buildings. Buildings and
structures or portions thereof which are neither heated
nor cooled.
101.2.2 Applicability. The provisions of this code shall ap-
ply to all matters affecting or relating to structures and pre-
mises, as set forth in Section 101 . Where, in a specific case,
different sections of this code specify different materials,
methods of construction or other requirements, the most re-
strictive shall govern.
[EB] 101.2.2.1 Existing Installations. Except as other-
wise provided for in this chapter, a provision in this code
shall not require the removal, alteration or abandonment
of, nor prevent the continued utilization and maintenance
of, an existing building envelope, mechanical, service
water-heating, electrical distribution or illumination sys-
tem lawfully in existence at the time of the adoption of
this code.
[EB] 101.2.2.2 Additions, alterations or repairs. Addi-
tions, alterations, renovations or repairs to a building en-
velope, mechanical, service water-heating, electrical dis-
tribution or illumination system or portion thereof shall
conform to the provisions of this code as they relate to
new construction without requiring the unaltered por-
tion^) of the existing system to comply with all of the re-
quirements of this code. Additions, alterations or repairs
shall not cause any one of the aforementioned and exist-
ing systems to become unsafe, hazardous or overloaded.
[EB] 101.2.23 Historic buildings. The provisions of
this code relating to the construction, alteration, repair,
enlargement, restoration, relocation or movement of
buildings or structures shall not be mandatory for exist-
ing buildings or structures specifically identified and
classified as historically significant by the state or local
jurisdiction, listed in The National Register of Historic
Places or which have been determined to be eligible for
such listing.
[EB] 101.2.2.4 Change in occupancy. It shall be unlaw-
ful to make a change in the occupancy of any building or
structure which would result in an increase in demand for
either fossil fuel or electrical energy supply unless such
building or structure is made to comply with the require-
ments of this code or otherwise approved by the authority
having jurisdiction. The code official shall certify that
such building or structure meets the intent of the provi-
sions of law governing building construction for the pro-
posed new occupancy and that such change of occupancy
does not result in any increase in demand for either fossil
fuel or electrical energy supply or any hazard to the pub-
lic health, safety or welfare.
101.2.3 Mixed occupancy. When a building houses more
than one occupancy, each portion of the building shall con-
form to the requirements for the occupancy housed therein.
Where minor accessory uses do not occupy more than 10
percent of the area of any floor of a building, the major use
shall be considered the building occupancy. Buildings,
other than detached one- and two-family dwellings and
townhouses, with a height of four or more stories above
grade shall be considered commercial buildings for pur-
poses of this code, regardless of the number of floors that are
classified as residential occupancy.
101.3 Intent. The provisions of this code shall regulate the de-
sign of building envelopes for adequate thermal resistance and
low air leakage and the design and selection of mechanical,
electrical, service water-heating and illumination systems and
equipment which will enable effective use of energy in new
building construction. It is intended that these provisions pro-
vide flexibility to permit the use of innovative approaches and
techniques to achieve effective utilization of energy. This code
is not intended to abridge safety, health or environmental re-
quirements under other applicable codes or ordinances.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ADMINISTRATION
101.4 Compliance. Compliance with this code shall be deter-
mined in accordance with Sections 101.4.1 and 101.4.2.
101.4.1 Residential buildings. For residential buildings the
following shall be used as the basis for compliance assess-
ment: a systems approach for the entire building (Chapter
4), an approach based on performance of individual compo-
nents of the building envelope (Chapter 5), an approach
based on performance of the total building envelope (Chap-
ters), an approach based on acceptable practice for each en-
velope component (Chapter 5), an approach by prescriptive
specification for individual components of the building en-
velope (Chapter 5), or an approach based on simplified, pre-
scriptive specification (Chapter 6) where the conditions set
forth in Section 101.4.1.1 or 101.4.1.2 are satisfied.
101.4.1.1 Detached one- and two-family dwellings.
When the glazing area does not exceed 15 percent of the
gross area of exterior walls.
101.4.1.2 Residential buildings, Group R-2, R-4 or
townmouses. When the glazing area does not exceed 25
percent of the gross area of exterior walls.
101.4.2 Commercial buildings. For commercial buildings,
a prescriptive or performance-based approach (Chapter 7)
or as specified by acceptable practice (Chapter 8) shall be
used as the basis for compliance assessment.
SECTION 102
MATERIALS, SYSTEMS AND EQUBPMENT
102.1 General. Materials, equipment and systems shall be
identified in a manner that will allow a determination of their
compliance with the applicable provisions of this code.
102.2 Materials, equipment and systems installation. All in-
sulation materials, caulking and weatherstripping, fenestration
assemblies, mechanical equipment and systems components,
and water-heating equipment and system components shall be
installed in accordance with the manufacturer's installation in-
structions.
102.3 Maintenance information. Required regular mainte-
nance actions shall be clearly stated and incorporated on a
readily accessible label. Such label shall include the title or
publication number, the operation and maintenance manual for
that particular model and type of product. Maintenance instruc-
tions shall be furnished for equipment that requires preventive
maintenance for efficient operation.
102.4 Insulation installation. Roof/ceiling, floor, wall cavity
and duct distribution systems insulation shall be installed in a
manner that permits inspection of the manufacturer's R- value
identification mark.
102.4.1 Protection of exposed foundation insulation. In-
sulation applied to the exterior of foundation walls and
around the perimeter of slab-on-grade floors shall have a
rigid, opaque and weather-resistant protective covering to
prevent the degradation of the insulation's thermal perfor-
mance. The protective covering shall cover the exposed area
of the exterior insulation and extend a minimum of 6 inches
(153 mm) below grade.
102.5 Identification. Materials, equipment and systems shall
be identified in accordance with Sections 102.5.1, 102.5.2 and
102.5.3.
102.5.1 Building envelope insulation. A thermal resis-
tance (R) identification mark shall be applied by the manu-
facturer to each piece of building envelope insulation 12
inches (305 mm) or greater in width.
Alternatively, the insulation installer shall provide a
signed and dated certification for the insulation installed in
each element of the building envelope, listing the type of in-
sulation installations in roof/ceilings, the manufacturer and
the /?-value. For blown-in or sprayed insulation, the installer
shall also provide the initial installed thickness, the settled
thickness, the coverage area and the number of bags in-
stalled. Where blown-in or sprayed insulation is installed in
walls, floors and cathedral ceilings, the installer shall pro-
vide a certification of the installed density and R- value. The
installer shall post the certification in a conspicuous place
on the job site.
102.5.1.1 Roof/celling insulation. The thickness of
roof/ceiling insulation that is either blown in or sprayed
shall be identified by thickness markers that are labeled
in inches or millimeters installed at least one for every
300 square feet (28 m 2 ) throughout the attic space. The
markers shall be affixed to the trusses or joists and
marked with the minimum initial installed thickness and
minimum settled thickness with numbers a minimum of
1 inch (25 mm) in height. Each marker shall face the attic
access. The thickness of installed insulation shall meet or
exceed the minimum initial installed thickness shown by
the marker.
toeling. [/-factors of fenestration products (windows, doors
and skylights) shall be determined in accordance with
NFRC 100 by an accredited, independent laboratory, and la-
beled and certified by the manufacturer. The solar heat gain
coefficient (SHGC) of glazed fenestration products (win-
dows, glazed doors and skylights) shall be determined in ac-
cordance with NFRC 200 by an accredited, independent
laboratory, and labeled and certified by the manufacturer.
Where a shading coefficient for a fenestration product is
used, it shall be determined by converting the product's
SHGC, as determined in accordance with NFRC 200, to a
shading coefficient, by dividing the SHGC by 0.87. Such
certified and labeled [/-factors and SHGCs shall be ac-
cepted for purposes of determining compliance with the
building envelope requirements of this code.
When a manufacturer has not determined product [/-fac-
tor in accordance with NFRC 100 for a particular product
line, compliance with the building envelope requirements of
this code shall be determined by assigning such products a
default [/-factor in accordance with Tables 102.5.2(1) and
1 02.5.2(2). When a SHGC or shading coefficient is used for
code compliance and a manufacturer has not determined
product SHGC in accordance with NFRC 200 for a particu-
lar product line, compliance with the building envelope re-
quirements of this code shall be determined by assigning
such products a default SHGC in accordance with Table
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ADMINISTRATION
102.5.2(3). Product features must be verifiable for the prod-
uct to qualify for the default value associated with those fea-
tures. Where the existence of a particular feature cannot be
determined with reasonable certainty, the product shall not
receive credit for that feature. Where a composite of materi-
als from two different product types is used, the product
shall be assigned the higher (/-factor.
TABLE 102.5.2(1)
W-FACTOR DEFAULT TABLE FOR WINDOWS,
GLAZED DOORS AND SKYLIGHTS
TABLE 102.5.2(2)
5EFAULT TABLE FOR NONGLAZi
SINGLE
DOUBLE
FRAME MATERIAL AND PRODUCT TYPE 3
GLAZED
GLAZED
Metal without thermal break:
Curtain wall
1.22
0.79
Fixed
1.13
0.69
Garden window
2.60
1.81
Operable (including sliding and
swinging glass doors)
1.27
0.87
Site-assembled sloped/overhead glazing
1.36
0.82
Skylight
1.98
1.31
Metal with thermal break:
Curtain wall
1.11
0.68
Fixed
1.07
0.63
Operable (including sliding and
swinging glass doors)
1.08
0.65
Site-assembled sloped/overhead glazing
1.25
0.70
Skylight
1.89
1.11
Reinforced vinyl/metal clad wood:
Fixed
0.98
0.56
Operable (including sliding and
swinging glass doors)
0.90
0.57
Skylight
1.75
1.05
Wood/vinyl/fiberglass:
Fixed
0.98
0.56
Garden window
2.31
1.61
Operable (including sliding and
swinging glass doors)
0.89
0.55
Skylight
1.47
0.84
DOOR TYPE
WITH FOAM
CORE
WITHOUT
FOAM
CORE
Steel doors (1.75 inches thick)
0.35
0.60
WITH
STORM
DOOR
WITHOUT
STORM
DOOR
Wood doors (1.75 inches thick)
Hollow core flush
Panel with 0.438-inch panels
Panel with 1.125-inch panels
Solid core flush
0.32
0.36
0.28
0.26
0.46
0.54
0.39
0.40
For SI: 1 inch = 25.4 mm.
102.53 Bract flMstribirtnoim systems insulatioim. A thermal
resistance (R) identification mark shall be applied by the
manufacturer in maximum intervals of no greater than 10
feet (3048 mm) to insulated flexible duct products showing
the thermal performance i?-value for the duct insulation it-
self (excluding air films, vapor retarders or other duct com-
ponents).
ECTBON 103
WJATEF
OF CONSTRUCTION, DESIGN OR
O SYSTEMS
.S— METHOD
a. Glass-block assemblies with mortar but without reinforcing or framing shall
have a [/-factor of 0.60.
103.1 General. The provisions of this code are not intended to
prevent the use of any material, method of construction, design
or insulating system not specifically prescribed herein, pro-
vided that such construction, design or insulating system has
been approved by the code official as meeting the intent of the
code.
Compliance with specific provisions of this code shall be de-
termined through the use of computer software, worksheets,
compliance manuals and other similar materials when they
have been approved by the code official as meeting the intent of
this code.
TABLE 102.5.2(3)
SHGC DEFAULT TABLE FOR PENES'
PRODUCT DESCRIPTION
SINGLE GLAZED
DOUBLE GLAZED
Clear
Bronze
Green
Gray
Clear
+
Clear
Bronze
+
Clear
Green
+
Clear
Gray
+
Clear
Metal frames
Fixed
Operable
0.78
0.75
0.67
0.64
0.65
0.62
0.64
0.61
0.68
0.66
0.57
0.55
0.55
0.53
0.54
0.52
Nonmetal frames
Fixed
Operable
0.75
0.63
0.64
0.54
0.62
0.53
0.61
0.52
0.66
0.55
0.54-
0.46
0.53
0.45
0.52
0.44
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ADMINISTRATION
SECTION 104
CONSTRUCTION DOCUMENTS
104.1 General. Construction documents and other supporting
data shall be submitted in one or more sets with each applica-
tion for a permit. The construction documents and designs sub-
mitted under the provisions of Chapter 4 shall be prepared by a
registered design professional where required by the statutes of
the jurisdiction in which the project is to be constructed. Where
special conditions exist, the code official is authorized to re-
quire additional construction documents to be prepared by a
registered design professional.
Exceptions:
1 . The code official is authorized to waive the submis-
sion of construction documents and other supporting
data not required to be prepared by a registered design
professional if it is found that the nature of the work
applied for is such that reviewing of construction doc-
uments is not necessary to obtain compliance with
this code.
2. For residential buildings having a conditioned floor
area of 5,000 square feet (465 m 2 ) or less, designs sub-
mitted under the provisions of Chapter 4 shall be pre-
pared by anyone having qualifications acceptable to
the code official.
104.2 Information on construction documents. Construc-
tion documents shall be drawn to scale upon suitable material.
Electronic media documents are permitted to be submitted
when approved by the code official. Construction documents
shall be of sufficient clarity to indicate the location, nature and
extent of the work proposed and show in sufficient detail perti-
nent data and features of the building and the equipment and
systems as herein governed, including, but not limited to, de-
sign criteria, exterior envelope component materials, [/-factors
of the envelope systems, [/-factors of fenestration products,
R- values of insulating materials, size and type of apparatus and
equipment, equipment and systems controls and other perti-
nent data to indicate compliance with the requirements of this
code and relevant laws, ordinances, rules and regulations, as
determined by the code official.
SECTION 106
VALIDITY
106.1 General. If a section, subsection, sentence, clause or
phrase of this code is, for any reason, held to be unconstitu-
tional, such decision shall not affect the validity of the remain-
ing portions of this code.
SECTION 107
REFERENCED STANDARDS
107.1 General. The standards, and portions thereof, which are
referred to in this code and listed in Chapter 10, shall be consid-
ered part of the requirements of this code to the extent of such
reference.
107.2 Conflicting requirements. When a section of this code
and a section of a referenced standard from Chapter 10 specify
different materials, methods of construction or other require-
ments, the provisions of this code shall apply.
SECTION 105
INSPECTIONS
105.1 General. Construction or work for which a permit is re-
quired shall be subject to inspection by the code official.
105.2 Approvals required. No work shall be done on any part
of the building or structure beyond the point indicated in each
successive inspection without first obtaining the written ap-
proval of the code official. No construction shall be concealed
without inspection approval.
105.3 Final inspection. There shall be a final inspection and
approval for buildings when completed and ready for occu-
pancy.
105.4 Reinspection. A structure shall be reinspected when de-
termined necessary by the code official.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
DEFINITIONS
GENERAL
201.1 Scope. Unless otherwise expressly stated, the following
words and terms shall, for the purposes of this code, have the
meanings indicated in this chapter.
201.2 Interchangeability. Words used in the present tense in-
clude the future; words in the masculine gender include the
feminine and neuter; the singular number includes the plural
and the plural, the singular.
201.3 Terms defined in other codes. Where terms are not de-
fined in this code and are defined in the International Building
Code, ICC Electrical Code, International Fire Code, Interna-
tional Fuel Gas Code, International Mechanical Code or the
International Plumbing Code, such terms shall have meanings
ascribed to them as in those codes.
201.4 Terms not defined. Where terms are not defined through
the methods authorized by this section, such terms shall have
ordinarily accepted meanings such as the context implies.
IEC
GENERAL DEFINITION!
Ad-
mitting close approach because not guarded by locked doors,
elevation or other effective means (see "Readily accessible").
ADDITION. An extension or increase in the height, condi-
tioned floor area or conditioned volume of a building or struc-
ture.
AIR TRANSPORT FACTOR. The ratio of the rate of useful
sensible heat removal from the conditioned space to the energy
input to the supply and return fan motor(s), expressed in consis-
tent units and under the designated operating conditions.
ALTERATION. Any construction, renovation or change in a
mechanical system that involves an extension, addition or
change to the arrangement, type or purpose of the original in-
stallation.
ANNUAL FUEL UTILIZATION EFFICIENCY (AFUE).
The ratio of annual output energy to annual input energy which
includes any nonheating season pilot input loss, and for gas or
oil-fired furnaces or boilers, does not include electrical energy.
APPROVED. Approved by the code official or other authority
having jurisdiction as the result of investigation and tests con-
ducted by said official or authority, or by reason of accepted
principles or tests by nationally recognized organizations.
AUTOMATIC. Self-acting, operating by its own mechanism
when actuated by some impersonal influence, as, for example,
a change in current strength, pressure, temperature or mechani-
cal configuration (see "Manual").
BASEMENT WALL. The opaque portion of a wall which en-
closes one side of a basement and having an average be-
low-grade area greater than or equal to 50 percent of its total
wall area, including openings (see "Gross area of exterior
walls").
BTU. Abbreviation for British thermal unit, which is the quan-
tity of heat required to raise the temperature of 1 pound (0.454
kg) of water 1°F (D0.56°C), (1 Btu = 1,055 J).
BUILDING. Any structure occupied or intended for support-
ing or sheltering any use or occupancy.
BUILDING ENVELOPE. The elements of a building which
enclose conditioned spaces through which thermal energy is
capable of being transferred to or from the exterior or to or from
spaces exempted by the provisions of Section 101.2.1.
CODE OFFICIAL. The officer or other designated authority
charged with the administration and enforcement of this code,
or a duly authorized representative.
COEFFICIENT OF PERFORMANCE (COP)—
COOLING. The ratio of the rate of heat removal to the rate of
energy input in consistent units, for a complete cooling system
or factory-assembled equipment, as tested under a nationally
recognized standard or designated operating conditions.
COEFFICIENT OF PERFORMANCE (COP)— HEAT
PUMP— HEATING. The ratio of the rate of heat delivered to
the rate of energy input, in consistent units, for a complete heat
pump system under designated operating conditions. Supple-
mental heat shall not be considered when checking compliance
with the heat pump equipment (COPs listed in the tables in Sec-
tions 503 and 803).
COMFORT ENVELOPE. The areas defined on a psychro-
metric chart and enclosing the range of operative temperatures
and humidities for both the winter and summer comfort zones §
as depicted in Figure 2 of ASHRAE 55.
COMMERCIAL BUILDING. All buildings other than de-
tached one- and two-family dwellings, townhouses and resi-
dential buildings, Groups R-2 and R-4.
CONDENSER. A heat exchanger designed to liquefy refriger-
ant vapor by removal of heat.
CONDENSING UNIT. A specific refrigerating machine
combination for a given refrigerant, consisting of one or more
power-driven compressors, condensers, liquid receivers (when
required), and the regularly furnished accessories.
CONDITIONED FLOOR AREA. The horizontal projection
of that portion of interior space which is contained within exte-
rior walls and which is conditioned directly or indirectly by an
energy-using system.
CONDITIONED SPACE. A heated or cooled space, or both,
within a building and, where required, provided with
humidification or dehumidification means so as to be capable
of maintaining a space condition falling within the comfort en-
velope set forth in ASHRAE 55.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
DEFINITIONS
COOLED SPACE. Space within a building which is provided
with a positive cooling supply (see "Positive cooling supply").
CRAWL SPACE WALL. The opaque portion of a wall which
encloses a crawl space and is partially or totally below grade.
DEADBAND. The temperature range in which no heating or
cooling is used.
DEGREE DAY, COOLING. A unit, based on temperature
difference and time, used in estimating cooling energy con-
sumption and specifying nominal cooling load of a building in
summer. For any one day, when the mean temperature is more
than 65°F (1 8°C), there are as many degree days as there are de-
grees Fahrenheit (Celsius) difference in temperature between
the mean temperature for the day and 65 °F (18°C). Annual
cooling degree days (CDD) are the sum of the degree days over
a calendar year.
this ratio becomes equal to COP (see also "Coefficient of per-
formance").
, A unit, based on temperature dif-
ference and time, used in estimating heating energy consump-
tion and specifying nominal heating load of a building in
winter. For any one day, when the mean temperature is less than
65°F (1 8°C), there are as many degree days as there are degrees
Fahrenheit (Celsius) difference in temperature between the
mean temperature for the day and 65°F (18°C). Annual heating
degree days (HDD) are the sum of the degree days over a calen-
dar year.
DUCT. A tube or conduit utilized for conveying air. The air
passages of self-contained systems are not to be construed as
air ducts.
DUCT SYSTEM. A continuous passageway for the transmis-
sion of air that, in addition to ducts, includes duct fittings,
dampers, plenums, fans and accessory air-handling equipment
and appliances.
CLLING UNIT. A single housekeeping unit comprised of
one or more rooms providing complete independent living fa-
cilities for one or more persons, including permanent provi-
sions for living, sleeping, eating, cooking and sanitation.
ECONOMIZER. A ducting arrangement and automatic con-
trol system that allows a cooling supply fan system to supply
outdoor air to reduce or eliminate the need for mechanical re-
frigeration during mild or cold weather.
ENERGY. The capacity for doing work (taking a number of
forms) which is capable of being transformed from one into an-
other, such as thermal (heat), mechanical (work), electrical and
chemical in customary units, measured in joules (J), kilo-
watt-hours (kWh) or British thermal units (Btu).
ENERGY ANALYSIS. A method for determining the annual
(8,760 hours) energy use of the proposed design and standard
design based on hour-by-hour estimates of energy use.
ENERGY COST. The total estimated annual cost for pur-
chased energy for the building, including any demand charges,
fuel adjustment factors and delivery charges applicable to the
building.
ENERGY EFFICIENCY RATIO (EER). The ratio of net
equipment cooling capacity in British thermal units per hour
(Btu/h) (W) to total rate of electric input in watts under desig-
nated operating conditions. When consistent units are used,
L That part of the system in which liquid re-
frigerant is vaporized to produce refrigeration.
EXTERIOR ENVELOPE. See "Building envelope."
EXTERIOR WALL. An above-grade wall enclosing condi-
tioned space which is vertical or sloped at an angle 60 degrees
(1.1 rad) or greater from the horizontal (see "Roof assembly").
Includes between-floor spandrels, peripheral edges of floors,
roof and basement knee walls, dormer walls, gable end walls,
walls enclosing a mansard roof, and basement walls with an av-
erage below-grade wall area which is less than 50 percent of the
total opaque and nonopaque area of that enclosing side.
FENESTRATION. Skylights, roof windows, vertical win-
dows (whether fixed or moveable), opaque doors, glazed doors,
glass block, and combination opaque/glazed doors.
FURNACE, DUCT. A furnace normally installed in distribu-
tion ducts of air-conditioning systems to supply warm air for
heating and which depends on a blower not furnished as part of
the duct furnace for air circulation.
L A self-contained, indirect-fired or
electrically heated furnace that supplies heated air through
ducts to spaces that require it.
, Total area of the glazed fenestration mea-
sured using the rough opening and including sash, curbing or
other framing elements that enclose conditioned space.
Glazing area includes the area of glazed fenestration assem-
blies in walls bounding conditioned basements. For doors
where the daylight opening area is less than 50 percent of the
door area, the glazing area is the daylight opening area. For all
other doors, the glazing area is the rough opening area for the
door including the door and the frame.
GROSS AREA OF EXTERIOR WALLS. The normal pro-
jection of all exterior walls, including the area of all windows
and doors installed therein (see "Exterior wall").
The sum of the areas of several
floors of the building, including basements, cellars, mezzanine
and intermediate floored tiers and penthouses of headroom
height, measured from the exterior faces of exterior walls or
from the centerline of walls separating buildings, but exclud-
ing:
1 . Covered walkways, open roofed-over areas, porches and
similar spaces.
2. Pipe trenches, exterior terraces or steps, chimneys, roof
overhangs and similar features.
, The form of energy that is transferred by virtue of a
temperature difference or a change in state of a material.
CAPACITY (HC). The amount of heat necessary to
raise the temperature of a given mass by one degree. The heat
capacity of a building element is the sum of the heat capacities
of each of its components.
HEAT PUMP. A refrigeration system that extracts heat from
one substance and transfers it to another portion of the same
substance or to a second substance at a higher temperature for a
beneficial purpose.
S
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
DEFINITIONS
HEAT REJECTION EQUIPMENT. Equipment used in
comfort cooling systems such as air-cooled condensers, open
cooling towers, closed-circuit cooling towers and evaporative
condensers.
An arrangement of piping and fittings, such as
elbows, or a commercially available heat trap, that prevents
thermosyphoning of hot water during standby periods.
HEATED SLAB. Slab-on-grade construction in which the
heating elements or hot air distribution system is in contact
with or placed within the slab or the subgrade.
HEATED SPACE. Space within a building which is provided
with a positive heat supply (see "Positive heat supply"). Fin-
ished living space within a basement with registers or heating
devices designed to supply heat to a basement space shall auto-
matically define that space as heated space.
HEATING SEASONAL PERFORMANCE FACTOR
(HSPF). The total heating output of a heat pump during its nor-
mal annual usage period for heating, in Btu, divided by the total
electric energy input during the same period, in watt hours, as
determined by DOE 10 CFR Part 430, Subpart B, Test Proce-
dures and based on Region 4.
ISTAT. A regulatory device, actuated by changes in
humidity, used for automatic control of relative humidity.
HVAC. Heating, ventilating and air conditioning.
HVAC SYSTEM. The equipment, distribution network, and
terminals that provide either collectively or individually the
processes of heating, ventilating, or air conditioning to a build-
ing.
HVAC SYSTEM COMPONENTS. HVAC system compo-
nents provide, in one or more factory-assembled packages,
means for chilling or heating water, or both, with controlled
temperature for delivery to terminal units serving the condi-
tioned spaces of the building. Types of HVAC system compo-
nents include, but are not limited to, water chiller packages,
reciprocating condensing units and water source (hydronic)
heat pumps (see "HVAC system equipment").
HVAC SYSTEM EQUIPMENT. HVAC system equipment
provides, in one (single package) or more (split system) fac-
tory-assembled packages, means for air circulation, air clean-
ing, air cooling with controlled temperature and
dehumidification and, optionally, either alone or in combina-
tion with a heating plant, the functions of heating and humidi-
fying. The cooling function is either electrically or heat
operated and the refrigerant condenser is air, water or
evaporatively cooled. Where the equipment is provided in more
than one package, the separate packages shall be designed by
the manufacturer to be used together. The equipment shall be
permitted to provide the heating function as a heat pump or by
the use of electric or fossil-fuel-fired elements. (The word
"equipment" used without a modifying adjective, in accor-
dance with common industry usage, applies either to HVAC
system equipment or HVAC system components.)
INSULATING SHEATHING. An insulating board having a
minimum thermal resistance of R-2 of the core material.
INTEGRATED PART-LOAD VALUE (IPLV). A single
measure of merit, based on part-load EER or COP expressing
part-load efficiency for air-conditioning and heat pump equip-
ment on the basis of weighted operation at various load capaci-
ties for the equipment.
The uncontrolled inward air leakage
through cracks and interstices in any building element and
around windows and doors of a building caused by the pressure
effects of wind or the effect of differences in the indoor and out-
door air density or both.
Devices, equipment, appliances, assemblies or
materials to which have been affixed a label, seal, symbol or
other identifying mark of a nationally recognized testing labo-
ratory, inspection agency or other organization concerned with
product evaluation that maintains periodic inspection of the
production of the above-labeled items and by whose label the
manufacturer attests to compliance with applicable nationally
recognized standards.
LISTED. Equipment, appliances, assemblies or materials in-
cluded in a list published by a nationally recognized testing lab-
oratory, inspection agency or other organization concerned
with product evaluation that maintains periodic inspection of
production of listed equipment, appliances, assemblies or ma-
terial, and whose listing states either that the equipment, appli-
ances, assemblies, or material meets nationally recognized
standards or has been tested and found suitable for use in a
specified manner.
LOW- VOLTAGE LIGHTING. Lighting equipment that is
powered through a transformer such as cable conductor, rail
conductor and track lighting.
LUMINAIRE. A complete lighting unit consisting of at least
one lamp and the parts designed to distribute the light, to posi-
tion and protect the lamp, to connect the lamp to the power sup-
ply and ballasting, when applicable. Luminaires are commonly
referred to as "lighting fixtures."
MANUAL. Capable of being operated by personal interven-
tion (see "Automatic").
MULTIFAMILY DWELLING. A building containing three
or more dwelling units.
MULTIPLE SINGLE-FAMILY DWELLING (TOWN-
HOUSE). A building not more than three stories in height con-
sisting of multiple single-family dwelling units, constructed in
a group of three or more attached units in which each unit ex-
tends from foundation to roof and with open space on at least
two sides.
OCCUPANCY. The purpose for which a building, or portion
thereof, is utilized or occupied.
OPAQUE AREAS. All exposed areas of a building envelope
which enclose conditioned space, except openings for win-
dows, skylights, doors and building service systems.
OUTDOOR AIR. Air taken from the outdoors and, therefore,
not previously circulated through the system.
OZONE DEPLETION FACTOR. A relative measure of the
potency of chemicals in depleting stratospheric ozone. The
ozone depletion factor potential depends on the chlorine and
bromine content and the atmospheric lifetime of the chemical.
The depletion factor potential is normalized such that the factor
for CFC-1 1 is set equal to unity and the factors for the other
chemicals indicate their potential relative to CFC- 1 1 .
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
DEFINITIONS
PACKAGED TERMINAL AIR CONDITIONER (PTAC).
A factory-selected wall sleeve and separate unencased combi-
nation of heating and cooling components, assemblies or sec-
tions (intended for mounting through the wall to serve a single
room or zone). It includes heating capability by hot water,
steam or electricity. (For the complete technical definition, see
ARI 310/380.)
PACKAGED TERMINAL HEAT PUMP. A PTAC capable
of using the refrigeration system in a reverse cycle or heat
pump mode to provide heat. (For the complete technical defini-
tion, see ARI 310/380.)
POSITIVE COOLING SUPPLY. Mechanical cooling delib-
erately supplied to a space, such as through a supply register.
Also, mechanical cooling indirectly supplied to a space
through uninsulated surfaces of space-cooling components,
such as evaporator coil cases and cooling distribution systems
which continually maintain air temperatures within the space
of 85°F (29°C) or lower during normal operation. To be consid-
ered exempt from inclusion in this definition, such surfaces
shall comply with the insulation requirements of this code.
POSITIVE HEAT SUPPLY. Heat deliberately supplied to a
space by design, such as a supply register, radiator or heating
element. Also, heat indirectly supplied to a space through unin-
sulated surfaces of service water heaters and space-heating
components, such as furnaces, boilers and heating and cooling
distribution systems which continually maintain air tempera-
ture within the space of 50°F (10°C) or higher during normal
operation. To be considered exempt from inclusion in this defi-
nition, such surfaces shall comply with the insulation require-
ments of this code.
PROPOSED DESIGN. A description of the proposed build-
ing design used to estimate annual energy costs for determining
compliance based on total building performance.
READILY ACCESSIBLE. Capable of being reached quickly
for operation, renewal or inspections, without requiring those
to whom ready access is requisite to climb over or remove ob-
stacles or to resort to portable ladders or access equipment (see
"Accessible").
REFRIGERANT. A substance utilized to produce refrigera-
tion by its expansion or vaporization or absorption.
RENEWABLE ENERGY SOURCES. Sources of energy
(excluding minerals) derived from incoming solar radiation,
including natural daylighting and photosynthetic processes;
from phenomena resulting therefrom, including wind, waves
and tides, lake or pond thermal differences; and from the inter-
nal heat of the earth, including nocturnal thermal exchanges.
REPAIR. The reconstruction or renewal of any part of an exist-
ing building for the purpose of its maintenance.
RESIDENTIAL BUILDING, GROUP R-2. Residential oc-
cupancies containing more than two dwelling units where the
occupants are primarily permanent in nature such as apartment
houses, boarding houses (not transient), convents, monasteries,
rectories, fraternities and sororities, dormitories and rooming
houses. For the purpose of this code, reference to Group R-2
occupancies shall refer to buildings that are three stories or less
in height above grade.
RESIDENTIAL BUILDING, GROUP R-4. Residential oc-
cupancies shall include buildings arranged for occupancies as
Residential Care/Assisted Living Facilities including more
than five but not more than 16 occupants, excluding staff. For
the purpose of this code, reference to Group R-4 occupancies
shall refer to buildings which are three stories or less in height
above grade.
ROOF ASSEMBLY. A roof assembly shall be considered as
all roof/ceiling components of the building envelope through
which heat flows, thus creating a building transmission heat
loss or gain, where such assembly is exposed to outdoor air and
encloses conditioned space.
The gross area of a roof assembly consists of the total interior
surface of all roof/ceiling components, including opaque sur-
faces, dormer and bay window roofs, trey ceilings, overhead
portions of an interior stairway to an unconditioned attic, doors
and hatches, glazing and skylights exposed to conditioned
space, that are horizontal or sloped at an angle less than 60 de-
grees (1.1 rad) from the horizontal (see "Exterior wall"). A roof
assembly, or portions thereof, having a slope of 60 degrees (1.1
rad) or greater from horizontal shall be considered in the gross
area of exterior walls and thereby excluded from consideration
in the roof assembly. Skylight shaft walls 12 inches (305 mm)
in depth or greater (as measured from the ceiling plane to the
roof deck) shall be considered in the gross area of exterior walls
and are thereby excluded from consideration in the roof assem-
bly.
ROOM AIR CONDITIONER. An encased assembly de-
signed as a unit for mounting in a window or through a wall, or
as a console. It is designed primarily to provide free delivery of
conditioned air to an enclosed space, room or zone. It includes a
prime source of refrigeration for cooling and dehumidification
and means for circulating and cleaning air, and shall be permit-
ted to also include means for ventilating and heating.
SASH CRACK. The sum of all perimeters of all window
sashes, based on overall dimensions of such parts, expressed in
feet. If a portion of one sash perimeter overlaps a portion of an-
other sash perimeter, the overlapping portions are only counted
once.
SCREW LAMP HOLDERS. A lamp base that requires a
screw-in-type lamp such as an incandescent or tungsten-halo-
gen bulb.
SEASONAL ENERGY EFFICIENCY RATIO (SEER).
The total cooling output of an air conditioner during its normal
annual usage period for cooling, in Btu/h (W), divided by the
total electric energy input during the same period, in
watt-hours, as determined by DOE 10 CFR Part 430, Subpart
B, Test Procedures.
SERVICE SYSTEMS. All energy-using systems in a building
that are operated to provide services for the occupants or pro-
cesses housed therein, including HVAC, service water heating,
illumination, transportation, cooking or food preparation, laun-
dering and similar functions.
SERVICE WATER HEATING. Supply of hot water for pur-
poses other than comfort heating.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
DEFINITIONS
JLATION TOOL. An approved software program or
calculation-based methodology that projects the hour-by-hour
loads and annual energy use of a building.
SKYLIGHT. Glazing that is horizontal or sloped at an angle
less than 60 degrees (1.1 rad) from the horizontal (see "Glazing
area").
SLAB-ON-GRADE FLOOR INSULATION. Insulation
around the perimeter of the floor slab or its supporting founda-
tion when the top edge of the floor perimeter slab is above the
finished grade or 12 inches (305 mm) or less below the finished
grade.
SOLAR ENERGY SOURCE. Source of natural daylighting
and of thermal, chemical or electrical energy derived directly
from conversion of incident solar radiation.
STANDARD DESIGN. A version of the proposed design that
meets the minimum requirements of this code and is used to de-
termine the maximum annual energy cost requirement for com-
pliance based on total building performance.
STANDARD TRUSS. Any construction that does not permit
the roof/ceiling insulation to achieve the required i?-value over
the exterior walls.
1 SUNROOM ADDITION. A one-story structure added to an
| existing dwelling with a glazing area in excess of 40 percent of
the gross area of the structure's exterior walls and roof.
SYSTEM. A combination of central or terminal equipment or
components or controls, accessories, interconnecting means,
and terminal devices by which energy is transformed so as to
perform a specific function, such as HVAC, service water heat-
ing or illumination.
THERMAL CONDUCTANCE. Time rate of heat flow
through a body (frequently per unit area) from one of its bound-
ing surfaces to the other for a unit temperature difference be-
tween the two surfaces, under steady conditions
(Btu/h • ft 2 • °F) [W/(m 2 • K)].
| THERMAL ISOLATION. A separation of conditioned
spaces, between a sunroom addition and a dwelling unit, con-
i sisting of existing or new wall(s), doors and/or windows. New
wall(s), doors and/or windows shall meet the prescriptive enve-
lope component criteria in Table 502.2.5.
THERMAL RESISTANCE (R). The reciprocal of thermal
conductance (h • ft 2 • °F/Btu) [(m 2 • K)/W].
THERMAL RESISTANCE, OVERALL(X„). The recipro-
cal of overall thermal conductance
(h • ft 2 ■ °F/Btu)[(m 2 • K)/W]. The overall thermal resistance of
the gross area or individual component of the exterior building
envelope (such as roof/ceiling, exterior wall, floor, crawl space
wall, foundation, window, skylight, door, opaque wall, etc.),
which includes the area weighted R- values of the specific com-
ponent assemblies (such as air film, insulation, drywall, fram-
ing, glazing, etc.).
THERMAL TRANSMITTANCE (£/)• The coefficient of
heat transmission (air to air). It is the time rate of heat flow per
unit area and unit temperature difference between the
warm-side and cold-side air films (Btu/h • ft 2 • °F)
[W/(m 2 • K)].The [/-factor applies to combinations of different
materials used in series along the heat flow path, single materi-
als that comprise a building section, cavity airspaces and
surface air films on both sides of a building element.
THERMAL TRANSMITTANCE, OVERALL (£/„). The
overall (average) heat transmission of a gross area of the exte-
rior building envelope (Btu/h ■ ft 2 ■ °F) [W/(m 2 • K)]. The
i/ -factor applies to the combined effect of the time rate of heat
flow through the various parallel paths, such as windows, doors
and opaque construction areas, comprising the gross area of
one or more exterior building components, such as walls, floors
or roof/ceilings.
THERMOSTAT. An automatic control device actuated by
temperature and designed to be responsive to temperature.
TOWNHOUSE. See "Multiple single-family dwelling." I
UNITARY COOLING AND HEATING EQUIPMENT.
One or more factory- made assemblies which include an evapo-
rator or cooling coil, a compressor and condenser combination,
and which shall be permitted to include a heating function as
well. When heating and cooling equipment is provided in more
than one assembly, the separate assemblies shall be designed to
be used together.
UNITARY HEAT PUMP. One or more factory-made assem-
blies which include an indoor conditioning coil, compressor(s)
and outdoor coil or refrigerant-to-water heat exchanger, in-
cluding means to provide both heating and cooling functions.
When heat pump equipment is provided in more than one as-
sembly, the separate assemblies shall be designed to be used to-
gether.
VENTILATION. The process of supplying or removing air by
natural or mechanical means to or from any space. Such air
shall be permitted to be conditioned or unconditioned.
VENTILATION AIR. That portion of supply air which comes
from outside (outdoors) plus any recirculated air that has been
treated to maintain the desired quality of air within a designated
space. O
WATER HEATER, INSTANTANEOUS. A water heater
with an input rating of at least 4,000 Btu/h per gallon (3 10 W/L)
stored water and a storage capacity of less than 10 gallons (38
L).
WATER HEATER, STORAGE. A water heater with an input
rating less than 4,000 Btu/h per gallon (3 1 W/L) of stored wa-
ter or storage capacity of at least 10 gallons (38 L).
WINDOW PROJECTION FACTOR. A measure of the por-
tion of glazing that is shaded by an eave or overhang.
ZONE. A space or group of spaces within a building with heat-
ing or cooling requirements, or both, sufficiently similar so that
comfort conditions can be maintained throughout by a single
controlling device.
2003 INTERNATIONAL ENERGY CONSERVATION CODE 16
10 2003 INTERNATIONAL ENERGY CONSERVATION CODE®
CHAPTER
m
m ©©NDDTflON!
IEC
301.1 Design criteria. The criteria of this chapter establish the
design conditions for use with Chapters 4, 5, 6 and 8.
SECTION 302
THERMAL DESIGN PARAMETERS
302.1 Exterior design conditions. The following design pa-
rameters in Table 302.1 shall be used for calculations required
under this code.
TABLE 302.1
EXTERIOR DESIGN CONDITIONS
CONDITION
VALUE
Winter 2 , Design Dry-bulb (°F)
Summer", Design Dry-bulb ( C F)
Summer 3 , Design Wet-bulb (°F)
Degree days heating b
Degree days cooling b
Climate zone
For SI: °C = [(°F)-32]/1.8.
a. The outdoor design temperature shall be selected from the columns of 97 '/ 2
percent values for winter and 2'/ 2 percent values for summer from tables in
the ASHRAE Fundamentals Handbook. Adjustments shall be permitted to
reflect local climates which differ from the tabulated temperatures, or local
weather experience determined by the code official.
b. The degree days heating (base 65°F) and cooling (base 65°F) shall be se-
lected from NOAA "Annual Degree Days to Selected Bases Derived from
the 1 96 1 - 1990 Normals," data available from adjacent military installations,
or other source of local weather data acceptable to the code official.
c. The climate zone shall be selected from the applicable map provided in Fig-
ures 902.1(1) through 902.1(51) in Chapter 9 of this code.
i=>
2003 INTERNATIONAL ENERGY CONSERVATION CODE
111
1 2 2003 INTERNATIONAL ENERGY CONSERVATION CODE®
■SSDENTIAL BUILDING DESIGN BY SYSTEMS ANALYSIS
AND DESIGN OF BUILDINGS UTILIZING
RENEWABLE ENERGY SOURCES
SECTBQN 401
GENERAL
401.1 Scope. This chapter establishes design criteria in terms
of total energy use by a residential building, including all of its
systems.
STEP
1.1 Analysis procedure. Except as explicitly specified by
this chapter, the standard design home shall be configured and
simulated using identical methods and techniques as are used in
the configuration and simulation of the proposed design home.
402.2 Energy analysis. Compliance with this chapter will re-
quire an analysis of the annual energy usage, hereinafter called
an "annual energy analysis."
Exception: Chapters 5 and 6 establish criteria for different
energy-consuming and enclosure elements of the building
which, if followed, will eliminate the requirement for an an-
nual energy analysis while meeting the intent of this code.
402.2.1 Standard design. A building designed in accor-
dance with this chapter will be deemed as complying with
this code if the calculated annual energy consumption is not
greater than a similar building (defined as a "standard de-
sign") whose enclosure elements and energy-consuming
systems are designed in accordance with Chapter 5 . Specific
building envelope elements of the standard design shall
comply with Sections 402.2.1.1 through 402.2.1.4.
402.2.1.1 Exterior walls. The exterior wall assembly
{/-Factors for the standard design shall be selected by cli-
mate in accordance with Table 402.2.1.1.
^-factor. The fenestration sys-
tem [/-Factor used in the standard design shall be se-
lected by climate in accordance with Table 402.2.1.2.
402.2.1.3 Window area. The window area of the stan-
dard design, inclusive of the framed sash and glazing
area, shall be equal to 18 percent of the conditioned floor
area of the proposed design.
402.2.1.4 Skylights. Skylights and other nonvertical roof
glazing elements shall not be included in the standard de-
sign, and ceiling [/-factors used in the standard design
shall not include such elements in their computation.
402.2.2 Proposed design. For a proposed alternative build-
ing design (defined as a "proposed design") to be considered
similar to a "standard design," it shall utilize the same
nonrenewable energy source(s) for the same functions and
have equal conditioned floor area and the same ratio of ther-
mal envelope area to floor area (i.e., the same geometry), ex-
terior design conditions, occupancy, climate data, and usage
operational schedule as the standard design. Where an en-
ergy end use (such as space heating or domestic water) is to
be provided entirely from renewable energy sources in a
proposed design, the standard design shall assume an equip-
ment type using a nonrenewable energy source common to
that region for that end use as approved by the code official.
402.2.2.1 Orientation for groups of buildings. The
worst possible orientation of the proposed design, in
terms of annual energy use, considering north, northeast,
east, southeast, south, southwest, west and northwest ori-
entations, shall be used to represent group of otherwise
identical designs.
TABLE 402.2.1.1
STANDARD DESIGN WALL ASSEMBLY (^FACTORS (UJ
HEATING DEGREE DAYS 3
U„,(airtoair) b
> 13,000
0.038
9,000 - 12,999
0.046
6,500 - 8,999
0.052
4,500 - 6,499
0.058
3,500 - 4,499
0.064
2,600 - 3,499
0.076
< 2,600
0.085
a. From Table 302.1.
b. Including framing effects.
TABLE 402.2.1 .2
STANDARD DESIGN FENESTRATION SYSTEM
U-¥ACJORS(U g or U f )
HEATING DEGREE DAYS"
U FOR SECTION 502.2.1.1 AND U, FOR
SECTION 502.2.3.1 (air to air) 6
> 13,000
0.25
9,000 - 12,999
0.26
6,500 - 8,999
0.28
4,500 - 6,499
0.30
3,500 - 4,499
0.41
2,600 - 3,499
0.44
700 - 2,599
0.47
<700
0.74
a. From Table 302.1.
b. Entire assembly, including sash.
2003 8NTERNATIQNAL ENERGY CONSERVATION CODE®
13
RESIDENTIAL BUILDING DESIGN
402.2.3 Input values for residential buildings. The input
values in Sections 402.2.3.1 through 402.2.3.11 shall be
used in calculating annual energy performance. The re-
quirements of this section specifically indicate which vari-
ables shall remain constant between the standard design and
proposed design calculations. The standard design shall be a
base version of the design that directly complies with the
provisions of this code. The proposed building shall be per-
mitted to utilize a design methodology that is demonstrated,
through calculations satisfactory to the code official, to have
equal or lower annual energy use than the standard design.
402.2.3.1 Glazing systems. The input values in Sections
402.2.3.1.1 through 402.2.3.1.4, specific to glazing sys-
tems, shall be used in calculating annual energy perfor-
mance.
402.2.3.1.1 Orientation, standard design. As a min-
imum, equal areas on north, east, south and west ex-
posures shall be assumed.
402.2.3.1.2 Exterior shading, standard design.
Glazing areas in the standard design shall not be pro-
vided with exterior shading such as roof overhangs.
Energy performance impacts of added exterior shad-
ing for glazing areas which are accounted for in the
proposed design for a specific building shall be per-
mitted, provided that the code official approves the
actual installation of such systems.
402.2.3.1.3 Fenestration system solar heat gain co-
efficient, standard design. The fenestration system
solar heat gain coefficient (SHGC), inclusive of
framed sash and glazing area, of the glazing systems
in the standard design shall be 0.40 for HDD < 3,500
and 0.68 for HDD > 3,500 during periods of mechani-
cal heating and cooling operation. These fenestration
system SHGC values shall be multiplied together
with (added in series to) the interior shading values as
specified in Section 402.2.3.1.4 to arrive at an overall
solar heat gain coefficient for the installed glazing
system.
Where the SHGC characteristics of the proposed
fenestration products are not known, the default
SHGC values given in Table 102.5.2(3) shall be used
for the proposed design.
GO
402.2.3.1.4 Interior shading, st
proposed design. The same schedule of interior
shading values, expressed as the fraction of the solar
heat gain admitted by the fenestration system that is
also admitted by the interior shading, shall be as-
sumed for the standard and proposed designs.
The values used for interior shading shall be 0.70 in
summer, and 0.90 in winter.
402.2.3.2 Heat storage (thermal mass). The following
input values, specific to heat storage (thermal mass),
shall be used in calculating annual energy performance:
Internal mass: 8 pounds per square foot (39 kg/m 2 )
Structural mass: 3.5 pounds per square foot (17 kg/m 2 )
.2.3.3 Building thermal envelope — surface areas
olume. The input values in Sections 402.2.3.3.1
through 402.2.3.3.4, specific to building thermal enve-
lope surface areas, shall be used in calculating annual en-
ergy performance.
402.2.3.3.1 Floors, walls, ceiling. The standard and
proposed designs shall have equal areas.
402.2.3.3.2 Foundation and floor type. The founda-
tion and floor type for both the standard and proposed
designs shall be equal.
4W2.2.3.3.3 Doors. The opaque door area of the stan-
dard design shall equal that of the proposed design
and shall have a [/-factor of 0.2 Btu/hr • ft 2 • °F [1 . 14 |
W/(m 2 ■ K)].
402.2.33.4 Building volume. The volume of both the
standard and proposed designs shall be equal.
402.2.3.4 Heating and cooling controls. Unless other-
wise specified by local codes, heating and cooling ther-
mostats shall comply with Table 402.2.3.4 for the 1
standard and proposed designs. The input values specific
to heating and cooling controls, shall be used in calculat-
ing annual energy performance.
TABLE 402.2.3.4
HEATING AND COOLING CONTROLS
PARAMETER
STANDARD
DESIGN VALUE
proposed DESIGN
VALUE
Heating
68 D F
68°F
Cooling
78°F
78°F
Setback/setup
5°F
Maximum of 5°F
Setback/setup duration
6 hours per day
Maximum of 6
hours per day
Number of setback/setup
periods per unit a
1
Maximum of 1
Maximum number of zones
per unit a
2
2
Number of thermostats per
zone
1
1
I-Gain
where:
I-Gain
CFA
BR
For SI: °C = [(°F) -32]/1.8
a. Units = Number of dwelling units in standard and proposed designs.
402.2.3J Internal heat gains. Equation 4-1 shall be
used to determine the input values, specific to internal
heat gains, that shall be used in both the standard design
and the proposed design in calculating annual energy
performance:
17,900 + (23.8 • CFA) + (4140 ■ BR)
(Equation 4-1)
Internal gains in Btu/day (kWh/day) per
dwelling unit.
Conditioned floor area.
Number of bedrooms.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
RESIDENTIAL BUILDING DESIGN
1.3.6 Domestic hot water (calculate, then coira-
stants). The following input values, specific to domestic
hot water, shall be used in calculating annual energy per-
formance.
120°F (49°C)
Gallons = (30 a) + (10 b)
Temperature set point
Daily hot water
consumption
where:
a = Number of dwelling units in standard and
proposed designs.
b = Number of bedrooms in each dwelling unit.
402.2.3.7 Site weather data (constants). The typical
meteorological year (TMY2), or its "ersatz" equivalent,
from the National Oceanic and Atmospheric Adminis-
tration (NOAA), or an approved equivalent, for the clos-
est available location shall be used.
L2.3.8 Foreedl-air distribution system loss factors
(DLF). The heating and cooling system efficiency shall
be proportionately adjusted for those portions of the
ductwork located outside or inside the conditioned space
using the values shown below:
System Operating Mode
Heating
Cooling
Duct Location
0.80
0.80
1.00
1.00
: Ducts located in a space that contains a positive
heating supply or cooling supply, or both, shall be
considered inside the building envelope.
Impacts from improved distribution loss factors
(DLF) shall be accounted for in the proposed design only
if the entire air distribution system is specified on the
construction documents to be substantially leak free, and
is tested after installation to ensure that the installation is
substantially leak free. "Substantially leak free" shall be
defined as the condition under which the entire air distri-
bution system (including the air handler cabinet) is capa-
ble of maintaining a 0.1-inch w.g. (25 Pa) internal
pressure at 5 percent or less of the air handler's rated air-
flow when the return grilles and supply registers are
sealed off. This test shall be conducted using methods
and procedures as specified in Section 3 of the SMACNA
HVAC Air Duct Leakage Test Manual, or by using other,
similar pressurization test methods and as approved by
the code official.
Where test results show that the entire distribution sys-
tem is substantially leak free, then seasonal DLFs shall
be calculated separately for heating and cooling modes
using engineering methods capable of considering the
net seasonal cooling energy heat gain impacts and the net
seasonal heating energy heat loss impacts that result
from the portion of the thermal air distribution system
that is located outside the conditioned space. Once these
heating and cooling season "distribution system energy
impacts" are known, then heating and cooling mode
DLFs for the proposed design shall be calculated using
Equations 4-2 and 4-3:
Total Seasonal Energy = Seasonal Building Energy +
Distribution System Energy Impacts
(Equation 4-2)
DLF = Seasonal Building Energy/Total Seasonal En-
ergy
(Equation 4-3)
Once the DLFs for the heating and cooling seasons are
known, the total "adjusted system efficiency" is calcu-
lated using Equation 4-4:
Adjusted System Efficiency = (Equipment
Efficiency DLF Percent of Duct Outside) + (Equip-
ment Efficiency DLF Percent of Duct Inside)
(Equation 4-4)
Equation 4-4 shall be used to develop adjusted system
efficiency for each heating and cooling system included
in the standard design. Where a single system provides
both heating and cooling, efficiencies shall be calculated
separately for heating and cooling modes.
402.2.3.9 Air infiltration. Annual average air changes
per hour (ACH) for the standard design shall be deter-
mined using the following equation:
ACH = Normalized Leakage x Weather Factor
(Ei
5)
where:
Normalized leakage = 0.57
and
Weather factor is determined in accordance with the
weather factors (W) given by ASHRAE 136, as taken
from the weather station nearest the building site.
Where the proposed design takes credit for reduced
ACH levels, documentation of measures providing such
reductions, and results of a post-construction
blower-door test shall be provided to the code official us-
ing ASTM E 779. No energy credit shall be granted for
ACH levels below 0.35.
402.2.3.1© Foundation walls. When performing annual
energy analyses for buildings with insulated basement or
crawl space walls, the design {/-factors taken from Table
502.2 for these walls of the standard building shall be
permitted to be decreased by accounting for the R- values
of the adjacent soil, provided that the foundation wall
{/-factor of the proposed building also accounts for the
/?-value of the adjacent soil.
402.2.3.11 Heating amid coolling system equipment ef-
ficiency, standard design. The efficiency of the heating
and cooling equipment shall meet, but not exceed the
minimum efficiency requirement in Section 503.2.
Where the proposed design utilizes an electric resistance
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
15
RESIDENTIAL BUILDING DESIGN
space heating system as the primary heating source, the
standard design shall utilize an air-cooled heat pump that
meets but does not exceed the minimum efficiency re-
quirements in Section 503.2.
Exception: Zonal electric-resistance space heating
equipment in buildings in Climate Zones la through
4b as indicated in Table 302.1
;.3 Design. The standard design, conforming to the criteria
of Chapter 5 and the proposed design, shall be designed on a
common basis as specified in Sections 402.3.1 through
402.3.3.
402.3.1 Units of energy. The comparison shall be expressed
as Btu input per square foot (W/m 2 ) of gross floor area per
year at the building site.
402.3.2 Equivalent energy units. If the proposed design re-
sults in an increase in consumption of one energy source and
a decrease in another energy source, even though similar
sources are used for similar purposes, the difference in each
energy source shall be converted to equivalent energy units
for purposes of comparing the total energy used.
402.3.3 Site energy. The different energy sources shall be
compared on the basis of energy use at the site where: 1 kWh =
3,413 Btu.
402.4 Analysis procedure. The analysis of the annual energy
usage of the standard and the proposed alternative building and
system designs shall meet the criteria specified in Sections
402.4.1 and 402.4.2.
402.4.1 Load calculations. The building heating and cool-
ing load calculation procedures used for annual energy con-
sumption analysis shall be detailed to permit the evaluation
of effect of factors specified in Section 402.5.
402.4.2 Simulation details. The calculation procedure used
to simulate the operation of the building and its service sys-
tems through a full-year operating period shall be detailed to
permit the evaluation of the effect of system design, climatic
factors, operational characteristics, and mechanical equip-
ment on annual energy usage. Manufacturer's data or com-
parable field test data shall be used when available in the
simulation of systems and equipment. The calculation pro-
cedure shall be based on 8,760 hours of operation of the
building and its service systems and shall utilize the design
methods specified in the ASHRAE Fundamentals Hand-
book.
402.5 Calculation procedure. The calculation procedure shall
include the items specified in Sections 402.5.1 through
402.5.7.
402.5.1 Design requirements. Environmental require-
ments as required in Chapter 3.
402.5.2 Climatic data. Coincident hourly data for tempera-
tures, solar radiation, wind and humidity of typical days in
the year representing seasonal variation.
402.5.3 Building data. Orientation, size, shape, framing,
mass, air, moisture and heat transfer characteristics.
402.5.4 Operational characteristics. Temperature, hu-
midity, ventilation, illumination and control mode for occu-
pied and unoccupied hours.
402.5.5 Mechanical equipment. Design capacity and
part-load profile.
402.5.6 Building loads. Internal heat generation, lighting,
equipment and number of people during occupied and unoc-
cupied periods.
402.5.7 Use of approved calculation tool. The same calcu-
lation tool shall be used to estimate the annual energy usage
for space heating and cooling of the standard design and the
proposed design. The calculation tool shall be approved by
the code official.
402.6 Documentation. Proposed alternative designs, submit-
ted as requests for exception to the standard design criteria,
shall be accompanied by an energy analysis comparison report.
The report shall provide technical detail on the standard and
proposed designs and on the data used in and resulting from the
comparative analysis to verify that both the analysis and the de-
signs meet the criteria of Chapter 4.
Exception: Proposed alternative designs for residential
buildings having a conditioned floor area of 5,000 square
feet (464 m 2 ) or less are exempted from the hourly analysis
described in Sections 402.4 and 402.5. However, a compari-
son of energy consumption using correlation methods based
on full-year hourly simulation analysis or other engineering
methods that are capable of estimating the annual heating,
cooling and hot water use between the proposed alternative
design and the standard design shall be provided.
16
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
emAPTEK
STSAL BUlLDlfW
m
IT
501.1 Scope. Residential buildings or portions thereof that en-
close conditioned space shall be constructed to meet the re-
quirements of this chapter.
SECTION 502
1UJLDING ENVELOPE REQUIREMENT!
The building envelope shall
comply with the applicable provisions of Sections 502.1.1
through 502.1.5 regardless of the means of demonstrating en-
velope compliance as set forth in Section 502.2.
502.1.1 Moisture control. The design shall not create con-
ditions of accelerated deterioration from moisture
condensation. Frame walls, floors and ceilings not venti-
lated to allow moisture to escape shall be provided with an
approved vapor retarder having a permeance rating of 1
perm(5.7x 10~ u kg/Pa sm 2 ) or less, when tested in accor-
dance with the dessicant method using Procedure A of
ASTM E 96. The vapor retarder shall be installed on the
warm-in-winter side of the thermal insulation.
Exceptions:
1 . In construction where moisture or its freezing will
not damage the materials.
2. Where the county in which the building is being
constructed is considered a hot and humid climate
area and identified as such in Figures 902.1(1)
through 902.1(51) in Chapter 9 of this code.
3. Where other approved means to avoid condensa-
tion in unventilated framed wall, floor, roof and
ceiling cavities are provided.
502.1.2 Masonry veneer. When insulation is placed on the
exterior of a foundation supporting a masonry veneer exte-
rior, the horizontal foundation surface supporting the veneer
is not required to be insulated to satisfy any foundation insu-
lation requirement.
502.13 Recessed lighting fixtures. When installed in the
building envelope, recessed lighting fixtures shall meet one
of the following requirements:
1 . Type IC rated, manufactured with no penetrations be-
tween the inside of the recessed fixture and ceiling
cavity and sealed or gasketed to prevent air leakage
into the unconditioned space.
2. Type IC or non-IC rated, installed inside a sealed box
constructed from a minimum 0.5-inch-thick (12.7
mm) gypsum wallboard or constructed from a pre-
formed polymeric vapor barrier, or other air-tight as-
sembly manufactured for this purpose, while main-
taining required clearances of not less than 0.5 inch
(12.7 mm) from combustible material and not less
than 3 inches (76 mm) from insulation material.
3. Type IC rated, in accordance with ASTM E 283 ad-
mitting no more than 2.0 cubic feet per minute (cfm)
(0.944 L/s) of air movement from the conditioned
space to the ceiling cavity. The lighting fixture shall
be tested at 1 .57 pounds per square foot (psf) (75 Pa)
pressure difference and shall be labeled.
502.1.4 Air leakage. Provisions for air leakage shall be in
accordance with Sections 502.1.4.1 and 502.1.4.2.
502.1.4.1 Window amid door assemblies. Window and
door assemblies installed in the building envelope shall
comply with the maximum allowable air leakage rates in
Table 502.1.4.1.
Exception: Site-constructed windows and doors
sealed in accordance with Section 502.1.4.2.
TABLE 502.1 .4.1
ALLOWABLE AIR LEAKAGE RATES 9 ' b
WINDOWS
(cfm per square foot of
window area)
DOORS
(cfm per square foot of door area)
Sliding
Swinging
0.3 b - d
0.3 d
0.5 c ' d
For SI: 1 cfm/ft 2 = 5 L/S • m 2 .
a. When tested in accordance with ASTM E 283.
b. See AAMA/WDMA 101/I.S.2.
c. Requirement based on assembly area.
d. See NFRC 400.
502.1.4.2 Caulking and sealants. Exterior joints, seams
or penetrations in the building envelope, that are sources
of air leakage, shall be sealed with durable caulking ma-
terials, closed with gasketing systems, taped or covered
with moisture vapor-permeable housewrap. Sealing ma-
terials spanning joints between dissimilar construction
materials shall allow for differential expansion and con-
traction of the construction materials.
This includes sealing around tubs and showers, at the
attic and crawl space panels, at recessed lights and
around all plumbing and electrical penetrations. These
are openings located in the building envelope between
conditioned space and unconditioned space or between
the conditioned space and the outside.
502.1.5 Fenestration solar meat gain coefficient. In loca-
tions with heating degree days (HDD) less than 3,500, the
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
17
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
combined solar heat gain coefficient (the area- weighted av-
erage) of all glazed fenestration products (including the ef-
fects of any permanent exterior solar shading devices) in the
building shall not exceed 0.4.
502.2 Heating and cooling criteria. The building envelope
shall meet the provisions of Table 502.2. Compliance shall be
demonstrated in accordance with Section 502.2.1, 502.2.2,
502.2.3, 502.2.4 or 502.2.5, as applicable.
Energy measure tradeoffs utilizing equipment exceeding the
requirements of Section 503 , 504 or 505 shall only use the com-
pliance methods described in Chapter 4.
TABLE 502.2
HEATING AND COOLING CRITERIA
a
ELEMENT
MODE
DETACHED ONE-
AND TWO-FAMILY
DWELLINGS
GROUP R-2,
R-4 0R
TOWNHOUSES
u
U
Walls
Heating or
cooling
—
—
Roof/ceiling
Heating or
cooling
—
—
Floors over
unheated
spaces
Heating or
cooling
—
—
Heated slab on
grade w
Heating
^-value =
W-value =
Unheated slab on
grade cdf
Heating
/{-value =
R- value =
Basement wall ef
Heating or
cooling
[/-factor =
[/-factor =
Crawl space wall ef
Heating or
cooling
[/-factor =
[/-factor =
For SI: 1 Btu/h • ft 2 • °F = 5.678 W/(m 2 • K), °C = [(°F)-32]/1.8.
a. Values shall be determined by using the graphs [Figures 502.2(1),
502.2(2), 502.2(3), 502.2(4), 502.2(5) and 502.2(6)] using HDD as speci-
fied in Section 302.
b. There are no insulation requirements for heated slabs in locations having
less than 500 HDD.
c. There are no insulation requirements for unheated slabs in locations hav-
ing less than 2,500 HDD.
d. Slab edge insulation is not required for unheated slabs in areas of very
heavy termite infestation probability in accordance with Section
502.2. 1 .4, and as shown in Figure 502.2(7).
e. Basement and crawl space wall {/-factors shall be based on the wall com-
ponents and surface air films. Adjacent soil shall not be considered in the
determination of the (/-factor.
f . Typical foundation insulation techniques can be found in the DOE Build-
ing Foundation Design Handbook.
502.2.1 Compliance by performance on an individual
component basis. Each component of the building enve-
lope shall meet the provisions of Table 502.2 as provided in
Sections 502.2.1.1 through 502.2.1.6.
502.2.1.1 Walls. The combined thermal transmittance
value (UJ of the gross area of exterior walls shall not ex-
ceed the value given in Table 502.2. Equation 5-1 shall be
used to determine acceptable combinations to meet this
requirement:
(U w x A w ) + (U s xA s ) +{U d xA d )
U
where:
(Equation 5-1)
U = The average thermal transmittance of the gross
area of the exterior walls.
A„ = The gross area of exterior walls.
U w = The combined thermal transmittance of the
various paths of heat transfer through the
opaque exterior wall area.
A w = Area of exterior walls that are opaque.
U g = The combined thermal transmittance of all
glazing within the gross area of exterior walls.
A g - The area of all glazing within the gross area of
exterior walls.
U d = The combined thermal transmittance of all
opaque doors within the gross area of exterior
walls.
A d = The area of all opaque doors within the gross
area of exterior walls.
Notes: (1) When more than one type of wall, window or
door is used, the U and A terms for those items shall be
expanded into subelements as:
(U wl A wl ) + (U w2 A w2 ) + (U w3 A w J +... (etc.)
(Equation 5-2)
(2) Access doors or hatches in a wall assembly shall be
included as a subelement of the wall assembly.
502.2.1.1.1 Steel stud framed walls. When the walls
contain steel stud framing, the value of U w used in
Equation 5-1 shall be recalculated using a series path
procedure to correct for parallel path thermal bridg-
ing. The U„ for purposes of Equation 5- 1 of steel stud
walls shall be determined as follows:
[/... =
(Equation 5-3)
[*, + (R ins x F c )]
where:
R s - The total thermal resistance of the elements
comprising the wall assembly along the path
of heat transfer, excluding the cavity
insulation and the steel stud.
R ins = The tf -value of the cavity insulation.
F c = The correction factor listed in Table
502.2.1.1.1.
Exception: Overall system tested U w values for
steel stud framed walls from approved laborato-
ries, when such data are acceptable to the code offi-
cial.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
0.40
0.30
0.25 -
m
=?
0.10
0.05
HEATING DEGREE DAYS
MAXIMUM LVFACTOR
DETACHED ONE-
AND TWO-FAMILY
DWELLINGS
ATO
1-2,500
2,501-7,000
7,001-13,000
13,001-14,000
> 14,000
0.265
0.265 - (HDD x 0.000034)
0.2188 - (HDD « 0.00001555)
0.11
0.11 - [(HDD - 13,000) * 0.000010]
0.10
I
\ I
1
1
1
1
—
l\
I \
I
I
V I
-%T-H —
I ^
I
I
I
V-i-
— i-
i i i i i i
i i i i i i
i i i i i i
— i j 1 1 1 1._
i i i i i i
i i i i i i
V 1 l l l 1 1
Vj" GROUP R-2, R-4, ~) j"
\| OR TOWNHOUSES ! i
1 1 1
1 1 1
1 i 1
1 1 1
1 1 1
GROUP R-2, R-4,
OR TOWNHOUSES
0-500
501-3,000
3,001-6,000
6,001-8,200
8,201-9,500
9,501-10,000
> 10,000
0.38
0.38 - [(HDD - 500) * 0.000066]
0.215
0.215 - [(HDD - 6,000) x 0.0000305]
0.148
0.148 - [(HDD - 9,500) * 0.0000558]
0.12
-"ET^CuZ 1 i-^O r-
"I
I
I
i
[ n^Sr
i \
1
r i "i
i i i
!
I
J
I
I
I
_l
j
_i
J. J_ L _l J _L
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1 1 1
_L J_ 1_ 1 _1 _L
-1_
1
1
1
i i i
i i i
i i i
L 1 _1
I I i
I I I
I I I
_L J_ l_
— i 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
I I I I I I I I I I I I I I I I I I I I
I I I I I I I I I I I I I I I I I I I I
I I I I I I I I I I I I I I I I I I I I
1 1 1 1 1 1 1 1 1 1 1 1 1 . 1 1 . , 1 ,
0.20 1
0.15
10
12
13
14
15
16
19
ANNUAL FAHRENHEIT HEATING DEGREE DAYS, BASE 65°F (in thousands)
For SI: 1 Btu/h • ft 2 ■ °F = 5.678W/(m 2 ■ K), °C = [(°F)-32]/1.8.
FIGURE 502.2(1)
W -FACTORS— WALLS: RESIDENTIAL BUILDJWGS
I
HEATING DEGREE DAYS
MAXIMUM U -FACTOR
ATO
0.05
1-2,500
2,501-3,900
0.05 - (HDD x 0.0000056)
0.036
3,901-6,000
6,001-16,000
0.036 - [(HDD - 3,900) x 0.00000476]
0.026
16,001-16,500
> 16,500
0.026 - [(HDD - 16,000) * 0.000002]
0.025
10 11 12 13 14 15 16 17 1f
19 20
21
ANNUAL FAHRENHEIT HEATING DEGREE DAYS, BASE 65°F (in thousands)
For SI: 1 Btu/h ■ ft 2 • °F = 5.678W/(m 2 ■ K), °C = [(°F)-32]/1.8.
FIGURE 502.2(2)
U o -FACT0RS— ROOF/CEILINGS
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
I
I
1 1 1
1 1 1
1 1 1 1
1 1 1 1
1
1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
I
I
I
4-
—
HEATED SLAB
1 1 ! 1 1 t I ! 1
-U4 4-U-I4 4- L 4
HEATING DEGREE DAYS
MINIMUM R-VALUE
1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1
-1 1 + 1 1 ^ 1 1 r —
1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1
I
I
I
I
I
I
I
0-499
500-4,500
4,501-19,000
>1 9,000
NONE REQUIRED
R-6
2.5862 + (HDD X 0.000759)
R-17
~r~iTr~iTrii
1 1 1 1 1 1 1 1 1 y
I I 1 1 1 1 1 1 x
I I I
I I I
I I I
I I I I
I I I I
I I I I
1
1
1
1 1 1 1 1 1 1 \jT 1
1 1 1 1 1 1 1 Jr \
1 1 1 1 1 1 1 y\ 1
I
I
I
~\
+ f~ - 1
I I I
I I I
I I I
I I I I
I I I I
I I I I
1
1
!
1 1 1 1 1 1 yr 1 1
1 1 1 1 1 1 _/i 1 1
1 1 1 1 1 \yf 1 1 1
I
I
I
Ty*~~
4-
I
I
I
I
I
I
I I
I I
I I
J. L _l
I I
t r i
i i i
i i i
4. i_ _| -
1 1 1
1 1 1
1 1 1
+ 1 ! —
1 1 1
1 1 1
1 1 1
■ t r i 1
1 1 1 1
1 1 1 1
- 4. 4- 1-4
1 1 1 1
1 1 1 1
1 1 1 1
- — I" 1 1 1
i HEATED SLAB
I i. l_ X
T '
1
1
4-
1
1
1
— t- —
1
1
1
r ~i t r n Jr r 1 1
1 1 1 1 1 y I I 1 I
1 1 1 1 y 1 1 1 \ y
L- _( 4- U -gA 4 4- 1 J*£
1 1 1 \ y 1 1 1 1 /I
I I I jr \ 1 1 \yr |
I 1 1 y 1 1 1 yf 1
-1 1 ■f> £ -\ 1 1- fx-l 1- —
1 1 Jr 1 1 1 jr 1 1
1 1 yr\ 1 1 1 yr\ 1 1
1 \y I i 1 vy 1 1 1
1_
1-
1 1 1
1 1 1
1 1 1
4- 1 1 —
1 1 1
1 1 1
1 1 1
— r 1 1 —
i i i
i i i
i i i
I I I I
l I I i
I I I I
—4- 4 1 f
I I I I
I I I I
1 111^
1 1 1 Jr
1 1 1 /i
1 j_ l/ j
1
1
1
— 1 — ^
1 yT
r\
-1
I
I
1
-1 —
1 ^
-1 —
yr 1 1 1 >r 1 it
r 1 1 1 \ yr 1 1 1 1
i i i yr 1 1 1 1
— I 4. 1- -*«^-4 1- J 1 \
i i yr i i i i i
i i y\ i i i i i
i \y^ i i i i i i
— i — -yr- — i 1 x 1 1 1 —
I yr\ I I I I I I
yr I I I I I I I
SI X L J X L I .1
T
I
I
1
1
1
-1
I
I
I
1_
I I i
i i i
i i i
1. 1 1 —
i i i
i i i
i i i
1 1 JT 1
1 1 jT\ 1
1 1/ 1 1
._ 4 — yf 1 [ —
1 / 1 i 1 y
xr 1 1 yr
y\ 1 1 _y\
1
1 ^
1 yr
r\'
1
1
-1
i
i
1 .
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 4- 1 1 1- \ 1 4
j 1 UNHEATEDSLAB 1 i 1
1 1 1 1 1 1 1 1
I
I
I
~ I ~
I
I
I
I
1
I
i i i
i i i
1 L 1
1 1 Jr 1
1 1 /i 1
. _L xr i_ j
I - 1 1 1 1 1 1 1 1
1 1 1 1 1 I 1 1 1
1 1 I I 1 1 I I 1
1 1 1 L J 4 L 1 X
—
— I-
1
1
1
4
1 y\ 1 1
1
1
1
-4
1
1
1
-1
i
i
1
1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1
1 1 1 1 1 i 1 1 !
1
1
1
i
1
1
1
1 2FT 4FT 1 i
X L l_ _L
i i i i i i i i
"I
L
-1 —
UNHEATED SLAB
HEATING DEGREE DAYS
MINIMUM R-VALUE
-
-
"1
1
T
1
1
1
t~~ — 1
L J .
0-2,499
2,500-4,500
4,501-19,500
>19,500
NONE REQUIRED
R-4
1.0 + (HDD x 0.000666)
R-14
-
— 1-
1
1
1
4—
1
1
1
._) 1 —
III!
1 1 1 1
— 4 \ 1 (
1 1 1 1
1 1 1 1
1 1 1 1
1
1
1
_4
1
1
l 1 I I l i i i
1 1 1 1 1 1 1 1
I
1
10 11
12 13 14 15 16 17
18
19 20
ANNUAL FAHRENHEIT HEATING DEGREE DAYS, BASE 65°F (in thousands)
For SI: 1 Btu/h • ft 2 • °F = 5.678W/(m 2 • K), °C = [(°F)-32]/1.8.
FIGURE 502.2(3)
R-VALUES— SLAB ON GRADE
20
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
RESIDENTIAL — COMPONENT PIRFORft
*JCE APPROACH
0.35
_ 0.30
fc 0.25
1
I
I
4-
I
I
I
I
I
I
-|-
I
I
1.
I
I
I
4-
I
I
I
1--
I
J 1.
I 1
-I 1 1
"I—
I
I
_J__
I
I
I
-4-
I
I
I
1 1.
4 { 1
■T"
I
I
_±_
-J.
HEATING DEGREE DAYS
MAXIMUM U.-FACTOR
0-1,000
0.08
1,001-2,500
0.07
2,501-15,500
0.05
15,501-16,500
0.05 -[HDD- 15,500) x 0.000010]
> 16,500
0.04
I
_L_
I I
J I.
I
.1.
I
I
I
-4-
I
i
I
- + -
I
I I
.1 L
I
.1.
I
!
I
-4-
I
i
I
I
_L.
I
I
I
-4—
J
!
I
1
1_
1 1
0.10
0.05
I 1
J 1
1 1
I
!
I
-4-
I
I
I
]
-4-
I
I
!
-I 1-
I 1
I 1
"I-
I
I
I
-1--
I
I
I _
I
"T"
I
i
_i_
12
13
14
15
16
17
19
20
21
ANNUAL FAHRENHEIT HEATING DEGREE DAYS, BASE 65°F (in thousands)
For SI: 1 Btu/h • ft 2 • °F = 5.678W/(m 2 • K), °C = [(°F)-32]/1.8.
FIGURE S02.2(4)
W »FACTORS— FLOOR OVER UNHEATED SPACES
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
21
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
HEATING DEGREE DAYS MAXIMUM L/-FACTOR
NONE REQUIRED
0.15
0.21 - (HDD x 0.000030)
0.06
1
8 9 10 11 12 13 14 15 16 17 18 19 20
ANNUAL FAHRENHEIT HEATING DEGREE DAYS, BASE 65°F (in thousands)
For SI: 1 Btu/h • ft 2 • °F = 5.678W/(m 2 • K), °C = [(°F)-32]/1.8.
FIGURE 502.2(5)
U-FACTORS— CRAWL SPACE WALLS
22
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
T~
HEATING DEGREE DAYS MAXIMUM (7-FACTOR
0-1,499
1,500-4,500
4,501-8,500
8,501-9,000
> 9,000
1 1 1 + 1
~r
I
I
-+-
I
I
I
NONE REQUIRED
0.205 - (HDD * 0.0000233)
0.11125- (HDD x 0.0000025)
0.6 - (HDD x 0.00006)
0.06
"T"
I
I
h 1 1
I
--U
I
I
I
~t-
I
I
I
"T"
I 1 4-
1 1
1-
1 1
1 T
J
— I , +
1
1
I
_ l_
I
I
_L_
I
I
1..
I 1 4- (-
\ 1
I
.1.
I
I
I
— 4- (-
I
I
I
"T
I
I
.1.
I
I
I
- + ■
-I 1 1
1
1._
J 1
I 1 -I-
— I
L_
I
.1.
I 1
7 8
10
11 12 13 14 15 16 17 18 19 20
ANNUAL FAHRENHEIT HEATING DEGREE DAYS, BASE 65°F (in thousands)
For SI: 1 Btu/h • ft 2 • °F = 5.678W/(m 2 • K), °C = [(°F)-32]/1.8.
F1C
W-FACTORS
)RE 502.2(6)
-BASEMENT
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
23
u
m
CO
D
m
z
M
O
&
<A
z
H
m
a
>
o
Z
s»
r-
m
z
m
a
<
o
o
2
W
m
<
o
2
O
o
o
m
NEW JERSEY
MASSACHUSETTS
RHODE ISLAND
CONNECTICUT
O
o
w,
•o
o
2
m
z
H
■o
m
x
-n
O
3)
2
>
2
O
171
>
"0
3
o
>
o
FIGURE 502.2(7)
TERMITE INFESTATION PROBABILITY MAP
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
TABLE 502.2 .1 .1.1
F c VALUES FOR WALL SECTIONS WITH STEEL STUDS
PARALLEL PATH CORRECTION FACTORS
NOMINAL
STUD SIZE 3
SPACING OF
FRAMING
(inches)
CAVITY INSULATION
B-VALUE
CORRECTION
FACTOR
2x4
16 o.c.
R-ll
R-13
R-15
0.50
0.46
0.43
2x4
24 o.c.
R-ll
R-13
R-15
0.60
0.55
0.52
2x6
16 o.c.
R-19
R-21
0.37
0.35
2x6
24 o.c.
R-19
R-21
0.45
0.43
2x8
16 o.c.
R-25
0.31
2x8
24 o.c.
R-25
0.38
For SI: 1 inch = 25.4 mm.
a. Applies to steel studs up to a maximum thickness of 0.064 inches (16
gage).
§©2.2.1.1.2 Mass waEEs. When thermal mass credit is
desired for an exterior wall having a heat capacity
greater than or equal to 6 Btu/ft 2 • °F [1.06 kJ/(m 2 •
K)] , the U„ for such a wall shall be less than or equal to
the applicable value in Table 502.2.1.1.2(1),
502.2.1.1.2(2) or 502.2.1.1.2(3) based on the U v re-
quired for an exterior wall having a heat capacity less
than 6 Btu/ft 2 • °F[1.06kJ/(m 2 • K)] as determined by
Section 502.2.1.1, Equation 5-1 and Figure 502.2(1).
Masonry or concrete walls having a mass
greater than or equal to 30 lb/ft 2 (146 kg/m 2 ) of ex-
terior wall area and solid wood walls having a mass
greater than or equal to 20 lb/ft 2 (98 kg/m 2 ) of exte-
rior wall area have heat capacities equal to or ex-
ceeding 6 Btu/ft 2 • °F[1.06kJ/(m 2 • K)] of exterior
wall area.
The heat capacity of the wall shall be determined
using Equation 5-4 as follows:
HC = w x c
where:
(Equation 5-4)
op
HC — Heat capacity of the exterior wall, Btu/ft 2
[kJ/(m 2 ■ K)] of exterior wall area.
w = Mass of the exterior wall, lb/ft 2 (kg/m 2 ) of ex
terior wall area is the density of the exterior
wall material, lb/ft 3 (kg/m 3 ) multiplied by the
thickness of the exterior wall, ft (m).
c = Specific heat of the exterior wall material,
Btu/lb • °F [kJ/(kg • K)] of exterior wall area
as determined from Chapter 24 of the
ASHRAE Fundamentals Handbook.
§©2.2.1.2 Rootyceilnmg. The combined thermal transmit-
tance value (U ) of the gross area of the roof or ceiling as-
sembly shall not exceed the value given in Table 502.2.
Equation 5-5 shall be used to determine acceptable com-
binations to meet this requirement.
U„ =
(U K xA R ) + (U s xA s )
where:
U„ =
A =
U R =
A R =
U s =
A, =
(U Rl x A RI ) + (U R2 x A m ) + ... etc.
U* =
(0.864 x R. ns ) + 0330
where:
R ins = The TJ-value of the cavity insulation,
h • ft 2 • °F/Btu.
O
s)
The average thermal transmittance of the gross
roof/ceiling area, Btu/h • ft 2 • °F [W/(m 2 • K)].
The gross area of the roof/ceiling assembly,
square feet (m 2 ).
The combined thermal transmittance of the
various paths of heat transfer through the
opaque roof/ceiling area, Btu/h • ft 2 • °F
[W/(m 2 • K)].
Opaque roof/ceiling assembly area,
square feet (m 2 ).
The combined thermal transmittance of the area
of all skylight elements in the roof/ceiling
assembly (See Section 502.2.1.2.1),
Btu/h • ft 2 • °F [W/(m 2 • K)].
The area (including frame) of all skylights in
the roof/ceiling assembly, square feet (m 2 ).
(see Section 502.2.1.2.1).
(1) When more than one type of roof/ceiling
and/or skylight is used, the U and A terms for those items
shall be expanded into their subelements as in Equation
5-6:
(Equation 5-6)
(2) Access doors or hatches in a roof/ceiling assembly
shall be included as a subelement of the roof/ceiling as-
sembly.
(3)When the roof/ceiling assembly contains
cold-formed steel truss framing, the U R value to be used
in Equation 5-5 shall be determined by Equation 5-7,
5-8, or 5-9. These equations apply to cold-formed steel
truss roof framing spaced at 24 inches (609 mm) on-cen-
ter and where the penetrations of the truss members
through the cavity insulation do not exceed three pene-
trations for each 4-foot (1220 mm) length of the truss.
For constructions without foam between the drywall
and bottom chord of the steel truss use Equation 5-7:
(Equation 5=7)
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
25
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
TABLE 502.2.1.1.2(1)
REQUIRED U w FOR WALL WITH A HEAT CAPACITY EQUAL
TO OR EXCEEDING 6 Btu/ft 2 • °F WITH INSULATION
PLACED ON THE EXTERIOR OF THE WALL MASS
HEATING
DEGREE
DAYS
U w REQUIRED FOR WALLS WITH A HEAT CAPACITY LESS THAN 6 Btu/ft 2 • °F AS DETERMINED
BY USING EQUATION 5-1 AND FIGURE 502.2(1)
0.24
0.22
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
- 2,000
0.33
0.31
0.28
0.26
0.23
0.21
0.18
0.16
0.13
0.11
0.08
2,001 - 4,000
0.32
0.30
0.27
0.25
0.22
0.20
0.17
0.15
0.13
0.10
0.08
4,001 - 5,500
0.30
0.28
0.25
0.23
0.21
0.18
0.16
0.14
0.11
0.09
0.07
5,501 - 6,500
0.28
0.26
0.23
0.21
0.19
0.17
0.15
0.12
0.10
0.08
0.06
6,501 - 8,000
0.26
0.24
0.22
0.19
0.17
0.15
0.13
0.11
0.09
0.07
0.05
> 8,000
0.24
0.22
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
For SI: °C = [( °F)-32]/1.8, 1 Btu/ft 2 • °F = 0.176 kJ/(m 2 • °K).
TABLE 502.2.1.1.2(2)
REQUIRED O^FOR WALL WITH A HEAT CAPACITY EQUAL
TO OR EXCEEDING 6 Btu/ft 2 ■ °F WITH INSULATION
PLACED ON THE INTERIOR OF THE WALL MASS
HEATING
DEGREE
DAYS
UNREQUIRED FOR WALLS WITH A HEAT CAPACITY LESS THAN 6 Btu/ft 2 ■ °F AS DETERMINED
BY USING EQUATION 5-1 AND FIGURE 502.2(1)
0.24
0.22
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
- 2,000
0.29
0.27
0.25
0.22
0.20
0.17
0.15
0.12
0.09
0.07
0.04
2,001-4,000
0.28
0.26
0.24
0.21
0.19
0.16
0.14
0.12
0.09
0.07
0.04
4,001 - 5,500
0.27
0.25
0.23
0.21
0.19
0.16
0.14
0.11
0.09
0.07
0.04
5,501 - 6,500
0.26
0.24
0.22
0.20
0.17
0.15
0.13
0.11
0.09
0.06
0.04
6,501 - 8,000
0.25
0.23
0.21
0.19
0.17
0.14
0.12
0.10
0.08
0.06
0.04
> 8,000
0.24
0.22
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
For SI: °C = [(°F)-32]/1.8, 1 Btu/ft 2 ■ °F = 0.176 kj/(m 2 ■ °K).
TABLE 502.2.1.1 .2(3)
REQUIRED U w FOR WALL WITH A HEAT CAPACITY EQUAL
TO OR EXCEEDING 6 B4u/ft 2 ■ °F WITH INTEGRAL
INSULATION (INSULATION AND MASS MIXED, SUCH AS A LOG WALL)
HEATING
DEGREE
DAYS
U„ REQUIRED FOR WALLS WITH A HEAT CAPACITY LESS THAN 6 Btu/ft 2 • °F AS DETERMINED
BY USING EQUATION 5-1 AND FIGURE 502.2(1)
0.24
0.22
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
- 2,000
0.33
0.31
0.28
0.25
0.23
0.20
0.17
0.15
0.12
0.09
0.07
2,001 - 4,000
0.32
0.30
0.27
0.24
0.22
0.19
0.17
0.14
0.11
0.09
0.06
4,001 - 5,500
0.30
0.28
0.26
0.23
0.21
0.18
0.16
0.13
0.11
0.08
0.06
5,501 -6,500
0.28
0.26
0.24
0.21
0.19
0.17
0.14
0.12
0.10
0.08
0.05
6,501 - 8,000
0.26
0.24
0.22
0.20
0.18
0.15
0.13
0.11
0.09
0.07
0.05
> 8,000
0.24
0.22
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
For SI: °C = [(°F)-32]/1.8, 1 Btu/ft 2 • °F = 0.176 kJ/(m 2 • °K).
26
2003 INTERNATIONAL ENERGY CONSERVATION CODE 18
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
For constructions with R-3 foam between the drywall
and bottom chord of the steel truss use Equation 5-8:
1
U,
(0.864 x R ins ) + 4.994
(Equation 5=8)
For constructions with R-5 foam between the drywall
and bottom chord of the steel truss use Equation 5-9:
1
Ur =
(0.864 x R ins ) + 7.082
ion: Overall system tested U R values for
roof/ceiling assemblies from approved laboratories,
when such data are acceptable to the code official.
(4)When the roof/ceiling assembly contains conven-
tional C-shaped cold-formed joist/rafter steel framing,
the U R value to be used in equation 5-5 shall be deter-
mined Equation 5-10 as follows:
1
U R =
mm'.
*, + (K,
x F
where:
R s = The total thermal resistance of the elements of
roof/ceiling construction, in a series along the
path of heat transfer, excluding the cavity
insula-
tion and the steel framing, h • ft 2 • °F/Btu.
R ins = The lvalue of the cavity insulation,
h • ft 2 • °F/Btu.
F cor = The correction factor listed in Table
502.2.1.2, dimensionless.
Exception; Overall system tested U R values for
roof/ceiling assemblies from approved laboratories,
when such data are acceptable to the code official.
502.2.1.2.1 Skylights. Skylight shafts, 12 inches (305
mm) in depth and greater, shall be insulated to no less
than R-13 in climates - 4,000 HDD and R-19 in cli-
mates greater than 4,000 HDD. The skylight shaft
thermal performance shall not be included in the roof
thermal transmission coefficient calculation.
502.2.1.3 Floors over umSieated spaces. The combined
thermal transmittance factor (U ) of the gross area of
floors over unheated spaces shall not exceed the value
given in Table 502.2. For floors over outdoor air (i.e.,
overhangs), f7 -factors shall not exceed the value for
roofs given in Table 502.2. Equation 5-11 shall be used to
determine acceptable combinations to meet this require-
ment.
U. =
(U f] x A ft ) + (U f2 x A f2 ) + K +(U fn x Aj,)
(Eqmation 5-11)
where:
U,
= The average thermal transmittance of the gross
floor area, Btu/h • ft 2 • °F [W/(m 2 • K)].
= The gross area of the different floor assemblies,
square feet (m 2 ).
The combined thermal transmittance of the
various paths of heat transfer through the n*
floor assembly, Btu/h • ft 2 • °F [W/(m 2 • K)].
The area associated with the n* floor assembly,
square feet (m 2 ).
: Access doors or hatches in a floor assembly shall
be included as a subelement of the floor assembly.
Exceptions: When the floor assembly contains
C-shaped, cold-formed steel framing, the value of U f „
used in Equation 5-11 shall be recalculated using a se-
•V* =
A fc =
TABLE 502.2.1 .2
mON FACTORS (F cor ) FOR ROOF/CEILING ASSEMBLIES
MEMBER
SIZE 3
SPACING OF
FRAMING MEMBERS"
(INCHES)
CAVITY INSULATION B-VALUE
R-19
R-30
R-38
R-49
2x4
16 ox.
0.90
0.94
0.95
0.96
2x6
0.70
0.81
0.85
0.88
2x8
0.35
0.65
0.72
0.78
2x10
0.35
0.27
0.62
0.70
2x12
0.35
0.27
0.51
0.62
2x4
24o.c.
0.95
0.96
0.97
0.97
2x6
0.78
0.86
0.88
0.91
2x8
0.44
0.72
0.78
0.83
2x10
0.44
0.35
0.69
0.76
2x12
0.44
0.35
0.61
0.69
For SI: 1 inch = 25.4 mm.
a. Applies to steel framing members up to a maximum thickness of 0.064 inches (16 gage).
b. Linear interpolation for determining correction factors which are intermediate between those given in the table is permitted.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
27
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
ries of path procedure to correct for parallel path ther-
mal bridging. The U^ for purposes of Equation 5-11
for C-shaped, cold-formed steel-framing construc-
tion shall be determined using Equation 5-12 as fol-
lows:
u * =
where:
R* =
1
(Equation 5-12)
(*>
x F
The total thermal resistance of the elements of
floor construction, in series along the path of
heat transfer, excluding the cavity insulation and
the steel joist, h • ft 2 -°F/Btu.
R im = The R- value of the cavity insulation,
h ■ ft 2 • °F/Btu.
F cor = The correction factor listed in Table 502.2.1.3,
dimensionless.
Exception: Overall system tested U^ values for steel-
framed floors from approved laboratories, when such
data are acceptable to the code official.
502.2.1.4 Slafo-on-grade floors. The thermal resistance
of the insulation around the perimeter of the floor shall
not be less than the value given in Table 502.2. Where in-
sulation is not required in accordance with Footnote d to
Table 502.2, building envelope compliance shall be dem-
onstrated by using Section 502.2.2 or Chapter 4 with the
actual slab insulation 7?-value in Table 502.2; or using
Section 502.2.4.
Insulation shall be of an approved type, and placed on
the outside of the foundation or on the inside of a founda-
tion wall. In climates below 6,000 annual Fahrenheit
HDD, the insulation shall extend downward from the ele-
vation of the top of the slab for a minimum distance of 24
inches (610 mm) or downward to at least the bottom of
the slab and then horizontally to the interior or exterior
for a minimum total distance of 24 inches (610 mm). In
all climates equal to or greater than 6,000 HDD, the insu-
lation shall extend downward from the elevation of the
top of the slab for a minimum of 48 inches (1219 mm) or
downward to at least the bottom of the slab and then hori-
zontally to the interior or exterior for a minimum total
distance of 48 inches (1219 mm). In all climates, hori-
zontal insulation extending outside of the foundation
shall be covered by pavement or by soil a minimum of 1
inches (254 mm) thick. The top edge of the insulation in-
stalled between the exterior wall and the edge of the
interior slab shall be permitted to be cut at a 45-degree
(0.8 rad) angle away from the exterior wall.
502.2.1.5 Crawl space walls. If the floor above a crawl
space does not meet the requirements of Section
502.2.1.3 and the crawl space does not have ventilation
openings that communicate directly with the outside air,
then the exterior walls of the crawl space shall have a
thermal transmittance value not exceeding the value
given in Table 502.2. Where the inside ground surface is
12 inches (305 mm) or greater below the outside finish
ground level, insulation shall extend from the top of the
wall to at least the inside ground surface [see Appendix
Detail 502.2.1.5(1) and the DOE Foundation Design
Handbook}. Where the inside ground surface is less than
12 inches (305 mm) below the outside finish ground
level, insulation shall extend from the top of the crawl
space wall to the top of the footing [see Appendix Detail
502.2.1.5(2) and the DOE Foundation Design Hand-
book].
T
CORRECTION FACTORS (
ABLE 502.2.1.3
F cor ) FOR STEEL FLOOR ASSEMBLIES
MEMBER
SIZE 3
SPACING OF
FRAMING
MEMBERS"
(INCHES)
CAVITY INSULATION R-VALUE
R-19
R-30
R-38
2x6
16 o.c.
0.70
Not Applicable
Not Applicable
2x8
0.35
Not Applicable
Not Applicable
2x10
0.35
0.27
Not Applicable
2x12
0.35
0.27
0.24
2x6
24 o.c.
0.78
Not Applicable
Not Applicable
2x8
0.44
Not Applicable
Not Applicable
2x10
0.44
0.35
Not Applicable
2x12
0.44
0.35
0.32
For SI: 1 inch = 25.4 mm.
a. Applies to steel framing members up to a maximum thickness of 0.064 inches (16 gage).
b. Linear interpolation is permitted for determining correction factors which are between those given in the table.
28
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
502.2.1.6 Basement walls. The exterior walls of condi-
tioned basements shall have a transmittance value not ex-
ceeding the value given in Table 502.2 from the top of the
basement wall to a depth of 10 feet (3048 mm) below the
outside finish ground level, or to the level of the basement
floor, whichever is less.
§©2.2.2 Compliance toy total building envelope perfor-
mance. The building envelope design of a proposed build-
ing shall be permitted to deviate from the [/ -factors,
[/-factors, or ^-values specified in Table 502.2, provided the
total thermal transmission heat gain or loss for the proposed
building envelope does not exceed the total heat gain or loss
resulting from the proposed building's conformance to the
values specified in Table 502.2. For basement and crawl
space walls that are part of the building envelope, the [/-fac-
tor of the proposed foundation shall be adjusted by the
R- value of the adjacent soil where the corresponding [/-fac-
tor in Table 502.2 is similarly adjusted. Heat gain or loss cal-
culations for slab edge and basement or crawl space wall
foundations shall be determined using methods consistent
with the ASHRAE Fundamentals Handbook.
§©2.2.3 Compliamice toy acceptable practice ©mi am indi-
vidual component basis. Each component of the building
envelope shall meet the provisions of Table 502.2 as pro-
vided in Sections 502.2.3.1 through 502.2.3.6. The various
walls, roof and floor assemblies described in Section
502.2.3 are typical and are not intended to be all inclusive.
Other assemblies shall be permitted, provided documenta-
tion is submitted indicating the thermal transmittance value
of the opaque section. Documentation shall be in accor-
dance with accepted engineering practice.
§02.2.3.1 Walls. The U of the exterior wall shall be de-
termined in accordance with Equation 5-13.
(U f xA f ) + U w x(l00-A / )
U
where:
100
(Equation §-13)
U = The overall thermal transmittance of the gross
exterior wall area.
I/, = The average thermal transmittance of the glaz-
ing area.
A f =
Glazing Area
Gross Exterior Wall Area x 100
U w = The average thermal transmittance of the
opaque exterior wall area.
The [/-factor for the opaque portion of the exterior
wall ([/„,) shall meet the provisions of Table 502.2 as de-
termined by Equation 5-13, and be selected from Table
502.2.3.1(1), 502.2.3.1(2) or 502.2.3.1(3) listed in the
Appendix. The glazing [/-factor (U f ) and the percentage
of glazing area (Ay) shall consist of all glazed surfaces in
the building envelope measured using the rough opening
and including the sash, curbing and other framing ele-
ments that enclose conditioned spaces. The value of U f
shall be determined in accordance with Section 102.5.2.
Opaque doors in the building envelope shall have a maxi-
mum [/-factor of 0.35. One door shall be exempt from
this requirement.
1. When the exterior wall(s) is comprised of steel
stud framing members, the procedure con-
tained in Section 502.2.1.1.1 shall be used to
adjust the [/-factor of the opaque sections of D
such walls prior to selection of the appropriate
acceptable practice(s) from Appendix Table
502.2.3.1(1).
2. When the thermal mass of the exterior building
walls is considered, the procedure contained in
Section 502.2.1.1.2 shall be used to adjust the
[/-factor of the opaque sections of such walls
prior to the selection of the appropriate accept-
able practice(s) from Table 502.2.3.1(2) or
502.2.3.1(3) listed in the Appendix.
§©2.2.3.2 Moof/ceiling. The roof/ceiling assembly shall
be selected from Appendix Table 502.2.3.2 for a thermal
transmittance value not exceeding the value specified for
roofs/ceilings in Table 502.2.
Exception: When the roof/ceiling is comprised of as-
semblies containing truss type or C-shaped,
cold-formed steel-framing members, the procedure
outlined in Section 502.2.1.2 shall be used to adjust
the roof/ceiling [/-factor before selecting a roof/ceil-
ing assembly from Appendix Table 502.2.3.2.
§©2.2.3.3 Floors over iinneated spaces. The floor sec-
tion over an unheated space shall be selected from Ap-
pendix Table 502.2.3.3 for the overall thermal
transmittance factor ([/„) not exceeding the value speci-
fied for floors over unheated spaces in Table 502.2. For
floors over outdoor air (i.e., overhangs), [/ -factors for
heating shall meet the same requirement as shown for
roofs/ceilings in Table 502.2.
tnon: When the floor is comprised of C-shaped,
cold-formed steel-framing members, the procedure
outlined in Section 502.2.1.3 shall be used to adjust
the floor [/-factor before selecting a floor assembly
from Appendix Table 502.2.3.3.
§©2.2.3.4 Slato-on-girade floors. Slab-on-grade floors
shall meet the provisions of Table 502.2 as determined by
Section 502.2.1.4.
Is. Where the floor above a
crawl space does not meet the requirements of Section
502.2.3.3 and the crawl space does not have ventilation
openings that communicate directly with the outside air,
then the exterior walls of the crawl space shall have a
thermal transmittance value not exceeding the value
given in Table 502.2. The [/-factor of the exterior crawl
space wall shall be determined by selecting the [/-factor
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
29
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
for the appropriate crawl space wall section for Appen-
dix Table 502.2.3.5.Where the inside ground surface is
12 inches (305 mm) or greater below the outside finish
ground level, insulation shall extend from the top of the
wall to at least the inside ground surface [see Appendix
Detail 502.2.1.5(1) and the DOE Foundation Design
Handbook]. Where the inside ground surface is less than
12 inches (305 mm) below the outside finish ground
level, insulation shall extend from the top of the crawl
space wall to the top of the footing [see Appendix Detail
502.2.1.5(2) and the DOE Foundation Design Hand-
book].
502.2.3.6 Basement walls. The exterior walls of condi-
tioned basements shall have a thermal transmittance
value not exceeding the value given in Table 502.2 from
the top of the basement wall to a depth of 10 feet (3048
mm) below grade, or to the level of the basement floor,
whichever is less. The [/-factor of the wall shall be deter-
mined by selecting the [/-factor for the wall section from
Appendix Table 502.2.3.6.
502.2.4 Compliance by prescriptive specification on an
individual component basis. For buildings with a window
area less than or equal to 8 percent, 12 percent, 15 percent,
18 percent, 20 percent or 25 percent (detached one- and
two-family dwellings) or 20 percent, 25 percent or 30 per-
cent (Group R-2, R-4 or townhouse residential buildings) of 1 1
the gross exterior wall area, the thermal resistance of insula-
tion applied to the opaque building envelope components
shall be greater than or equal to the minimum R- values, and
the area- weighted average thermal transmittance ([/-factor)
of all fenestration assemblies (other than opaque doors
which are governed by Section 502.2.4.6) shall be less than
or equal to the maximum [/-factors shown in Table
502.2.4(1), 502.2.4(2), 502.2.4(3), 502.2.4(4), 502.2.4(5),
502.2.4(6), 502.2.4(7), 502.2.4(8), or 502.2.4(9), as appli-
cable. Sections 502.2.4.1 through 502.2.4.19 shall apply to
the use of these tables.
502.2.4.1 Walls. The sum of the thermal resistance of
cavity insulation plus insulating sheathing (if used) shall
meet or exceed the "Exterior wall R- value."
502.2.4.2 Wood construction only. The tables shall only
be used for wood construction.
502.2.4.3 Window area. The actual window area of a
proposed design shall be computed using the rough
opening area of all skylights, above-grade windows and,
where the basement is conditioned space, any basement
windows.
502.2.4.4 Window area, exempt. One percent of the to-
tal window area computed under Section 502.2.4.3 shall
be exempt from the "Glazing [/-factor" requirement.
PRESCRIPTIVE BUILDING ENVELOPE
WINDOW AREA 8
TABLE 502.2.4(1)
REQUIREMENTS, DETACHED ONE- AND TWO-FAMILY DWELLINGS
PERCENT OF GROSS EXTERIOR WALL AREA
ZONE
HEATING
DEGREE DAYS
MAXIMUM
MINIMUM
Glazing
U-factor
Ceiling
R- value
Exterior wall
/7-value
Floor
fl-value
Basement wall
R-value
Slab perimeter
R-value and depth
Crawl space wall
R-value
1
0-499
Any
R-13
R-ll
R-ll
R-0
R-0
R-0
2
500 - 999
Any
R-19
R-ll
R-ll
R-0
R-0
R-4
3
1,000- 1,499
Any
R-19
R-ll
R-ll
R-0
R-0
R-5
4
1,500-1,999
Any
R-19
R-ll
R-ll
R-5
R-0
R-5
5
2,000 - 2,499
0.90
R-19
R-ll
R-ll
R-5
R-0
R-6
6
2,500 - 2,999
0.70
R-26
R-ll
R-ll
R-5
R-0
R-6
7
3,000 - 3,499
0.70
R-26
R-ll
R-13
R-5
R-0
R-6
8
3,500 - 3,999
0.65
R-30
R-ll
R-13
R-6
R-2, 2 ft.
R-7
9
4,000 - 4,499
0.59
R-30
R-ll
R-15
R-8
R-2, 2 ft.
R-9
10
4,500 - 4,999
0.55
R-30
R-13
R-15
R-8
R-2, 2 ft.
R-12
11
5,000-5,499
0.52
R-30
R-13
R-19
R-9
R-7, 2 ft.
R-16
12
5,500 - 5,999
0.45
R-38
R-13
R-19
R-9
R-7, 2 ft.
R-16
13
6,000 - 6,499
0.45
R-38
R-16
R-19
R-10
R-7, 4 ft.
R-16
14
6,500 - 6,999
0.43
R-38
R-16
R-19
R-10
R-7, 4 ft.
R-16
15
7,000 - 8,499
0.42
R-38
R-16
R-19
R-ll
R-8, 4 ft.
R-16
16
8,500 - 8,999
0.42
R-38
R-16
R-19
R-16
R-8, 4 ft.
R-16
17
9,000 - 12,999
0.42
R-38
R-16
R-19
R-16
R-ll, 4 ft.
R-16
For SI: 1 foot = 304.8 mm.
30
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
TABLE 502.2.4(2)
PRESCRIPTIVE BUILDING ENVELOPE REQUIREMENTS, DETACHED ONE- AMD TWO-FAMILY DWELLINGS
REA 12 PERCENT OF GROSS EXTERIOR '
ZONE
HEATING
DEGREE DAYS
MAXIMUM
MINIMUM
Glazing
U-factor
Ceiling
fl- value
EKterior wall
fl-value
Floor
R-value
Basement wall
H-value
Slab perimeter
R-value and depth
Crawl space wall
fl-value
1
0-499
Any
R-13
R-ll
R-ll
R-0
R-0
R-0
2
500 - 999
Any
R-19
R-ll
R-ll
R-0
R-0
R-4
3
1,000-1,499
0.75
R-19
R-ll
R-ll
R-0
R-0
R-5
4
1,500-1,999
0.75
R-19
R-ll
R-ll
R-4
R-0
R-5
5
2,000 - 2,499
0.65
R-19
R-13
R-ll
R-5
R-0
R-5
6
2,500 - 2,999
0.60
R-26
R-13
R-13
R-5
R-0
R-5
7
3,000 - 3,499
0.60
R-30
R-13
R-15
R-6
R-0
R-6
8
3,500 - 3,999
0.60
R-30
R-13
R-19
R-8
R-4, 2 ft.
R-10
9
4,000 - 4,499
0.55
R-38
R-13
R-19
R-9
R-4, 2 ft.
R-12
10
4,500 - 4,999
0.50
R-38
R-14
R-19
R-9
R-5, 2 ft.
R-16
11
5,000 - 5,499
0.45
R-38
R-16
R-19
R-9
R-6, 2 ft.
R-16
12
5,500 - 5,999
0.45
R-38
R-17
R-19
R-9
R-6, 2 ft.
R-16
13
6,000 - 6,499
0.40
R-38
R-18
R-19
R-10
R-6, 4 ft.
R-16
14
6,500 - 6,999
0.40
R-49
R-21
R-19
R-10
R-7, 4 ft.
R-17
15
7,000 - 8,499
0.40
R-49
R-21
R-19
R-10
R-9, 4 ft.
R-17
16
8,500 - 8,999
0.40
R-49
R-21
R-19
R-16
R-9, 4 ft.
R-17
17
9,000-12,999
0.40
R-49
R-21
R-19
R-16
R-ll, 4 ft.
R-17
For SI: 1 foot = 304.8 mm.
WINE
ENVELOPE RE'
WAREA15PEI
TABLE 502.2.4(3)
rfiENTS, DETACHED ONE- AND TWO-FAMILY DWELLINGS
ENT OF GROSS EXTERIOR WALL AREA
2DNE
HEATING
DEGREE DAYS
MAXIMUM
MINIMUM
Glazing
U-factor
Ceiling
fl-value
Exterior wall
fl-value
Floor
fl-value
Basement wall
fl-value
Slab perimeter
fl-value and depth
Crawl space wall
fl-value
1
0-499
Any
R-13
R-ll
R-ll
R-0
R-0
R-0
2
500 - 999
0.90
R-19
R-ll
R-ll
R-0
R-0
R-4
3
1,000- 1,499
0.75
R-19
R-ll
R-ll
R-0
R-0
R-5
4
1,500-1,999
0.75
R-26
R-13
R-ll
R-5
R-0
R-5
5
2,000 - 2,499
0.65
R-30
R-13
R-ll
R-5
R-0
R-6
6
2,500 - 2,999
0.60
R-30
R-13
R-19
R-6
R-4, 2 ft.
R-7
7
3,000 - 3,499
0.55
R-30
R-13
R-19
R-7
R-4, 2 ft.
R-8
8
3,500 - 3,999
0.50
R-30
R-13
R-19
R-8
R-5, 2 ft.
R-10
9
4,000 - 4,499
0.45
R-38
R-13
R-19
R-8
R-5, 2 ft.
R-ll
10
4,500 - 4,999
0.45
R-38
R-16
R-19
R-9
R-6, 2 ft.
R-17
11
5,000 - 5,499
0.45
R-38
R-18
R-19
R-9
R-6, 2 ft.
R-17
12
5,500 - 5,999
0.40
R-38
R-18
R-21
R-10
R-9, 2 ft.
R-19
13
6,000 - 6,499
0.35
R-38
R-18
R-21
R-10
R-9, 4 ft.
R-20
14
6,500 - 6,999
0.35
R-49
R-21
R-21
R-ll
R-ll, 4 ft.
R-20
15
7,000 - 8,499
0.35
R-49
R-21
R-21
R-ll
R-13, 4 ft.
R-20
16
8,500 - 8,999
0.35
R-49
R-21
R-21
R-18
R-14, 4 ft.
R-20
17
9,000 - 12,999
0.35
R-49
R-21
R-21
R-19
R-18, 4 ft.
R-20
For SI: 1 foot = 304.8 mm.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
31
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
PRESCRIPTIVE BUILDING EE>
TABLE 502.2.4(4)
/ELOPE REQUIREMENTS, DETACHED ONE- AND TWO-FAMILY DWELLINGS
&REA 18 PERCENT OF GROSS EXTERIOR WALL AREA
ZONE
HEATING
DEGREE DAYS
MAXIMUM
MINIMUM
Glazing
U-f actor
Ceiling
B-value
Exterior wall
fi-value
Floor
fl-value
Basement wall
B-value
Slab perimeter
B-value and depth
Crawl space wall
B-value
1
0-499
0.80
R-19
R-ll
R-ll
R-0
R-0
R-0
2
500 - 999
0.75
R-19
R-ll
R-ll
R-0
R-0
R-4
3
1,000- 1,499
0.70
R-26
R-13
R-ll
R-0
R-0
R-5
4
1,500 - 1,999
0.65
R-30
R-13
R-ll
R-5
R-0
R-5
5
2,000 - 2,499
0.55
R-30
R-13
R-ll
R-5
R-0
R-6
6
2,500 - 2,999
0.52
R-30
R-13
R-19
R-6
R-0
R-7
7
3,000 - 3,499
0.50
R-38
R-13
R-19
R-7
R-0
R-8
8
3,500 - 3,999
0.46
R-38
R-13
R-19
R-8
R-6, 2 ft.
R-ll
9
4,000 - 4,499
0.40
R-38
R-13
R-19
R-9
R-6, 2 ft.
R-13
10
4,500 - 4,999
0.37
R-38
R-15
R-19
R-9
R-6, 2 ft.
R-16
11
5,000 - 5,499
0.37
R-38
R-16
R-19
R-9
R-7, 2 ft.
R-17
12
5,500 - 5,999
0.37
R-38
R-19
R-19
R-10
R-8, 2 ft.
R-17
13
6,000 - 6,499
0.34
R-49
R-22
R-19
R-10
R-8, 4 ft.
R-17
14
6,500 - 6,999
0.33
R-49
R-22
R-25
R-ll
R-14,4ft.
R-19
15
7,000 - 8,499
0.33
R-49
R-25
R-30
R-15
Note a
R-25
16
8,500 - 8,999
0.33
R-49
R-25
R-30
R-19
Note a
R-25
17
9,000 - 12,999
0.33
R-49
R-25
R-30
R-19
Note a
R-25
For SI: 1 foot = 304.8 mm.
a. See Section 502.2.4.13.
TABLE 502.2.4(5)
I
PRESCRIPTIVE BUILDING ENVELOPE REQUIREMENTS, DETACHED ONE- AND TWO-FAMILY DWELLINGS
WINDOW AREA 20 PERCENT OF GROSS EXTERIOR WALL AREA
1
i ZONE
HEATING
DEGREE DAYS
MAXIMUM
MINIMUM
Glazing
U-factor
Ceiling
B-value
Exterior wall
B-value
Floor
B-value
Basement wall
B-value
Slab perimeter
B-value and depth
Crawl space wall
B-value
I 1
0-499
0.80
R-19
R-ll
R-ll
R-0
R-0
R-0
I 2
500 - 999
0.75
R-30
R-13
R-ll
R-0
R-0
R-4
i 3
1,000-1,499
0.70
R-30
R-13
R-ll
R-0
R-0
R-5
•• 4
1,500-1,999
0.60
R-30
R-13
R-ll
R-5
R-0
R-5
I 5
2,000 - 2,499
0.52
R-38
R-13
R-ll
R-5
R-0
R-6
6
2,500 - 2,999
0.50
R-38
R-13
R-19
R-6
R-0
R-7
7
3,000 - 3,499
0.46
R-38
R-13
R-19
R-7
R-0
R-9
8
3,500 - 3,999
0.42
R-38
R-13
R-19
R-8
R-6, 2 ft.
R-10
9
4,000 - 4,499
0.37
R-38
R-13
R-19
R-9
R-6, 2 ft.
R-13
10
4,500 - 4,999
0.37
R-38
R-16
R-19
R-9
R-6, 2 ft.
R-16
11
5,000-5,499
0.36
R-38
R-19
R-19
R-9
R-6, 2 ft.
R-16
12
5,500 - 5,999
0.33
R-49
R-20
R-19
R-10
R-7, 2 ft.
R-17
13
6,000 - 6,499
0.31
R-49
R-24
R-19
R-10
R-7, 4 ft.
R-17
14
6,500 - 6,999
0.30
R-49
R-26
R-21
R-ll
R-10, 4 ft.
R-17
15
7,000 - 8,499
0.30
R-49
R-26
R-21
R-ll
R-12,4ft.
R-19
16
8,500 - 8,999
0.30
R-49
R-26 J
R-21
R-19
R-12,4ft.
R-19
17
9,000 - 12,999
0.30
R-49
R-26
R-21
R-19
R-16, 4 ft.
R-19
For SI: 1 foot = 304.8 mm.
32
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
TABLE 502.2.4(6)
PRESCRIPTIVE BUILDING ENVELOPE REQUIREMENTS, DETACHED ONE- AND TWO-F
WINDOW AREA 25 PERCENT OF GROSS EXTERIOR WALL AREA
/JILV DWELLINGS
ZONE
HEATING
DEGREE DAYS
MAXIMUM
MINIMUM
Glazing
U-factor
Ceiling
H- value
Exterior wall
ft-value
Floor
R- value
Basement wall
/?- value
Slab perimeter
H-value and depth
Crawl space wall
R-value
1
0-499
0.70
R-30
R-ll
R-ll
R-0
R-0
R-0
2
500 - 999
0.65
R-30
R-13
R-ll
R-0
R-0
R-4
3
1,000 - 1,499
0.55
R-30
R-13
R-ll
R-0
R-0
R-5
4
1,500 - 1,999
0.52
R-30
R-13
R-13
R-6
R-0
R-6
5
2,000 - 2,499
0.50
R-38
R-13
R-19
R-8
R-0
R-10
6
2,500 - 2,999
0.46
R-38
R-16
R-19
R-6
R-0
R-7
7
3,000 - 3,499
0.45
R-38
R-19
R-19
R-7
R-0
R-9
8
3,500 - 3,999
0.41
R-38
R-19
R-19
R-8
R-6, 2 ft.
R-10
9
4,000 - 4,499
0.37
R-38
R-19
R-19
R-9
R-6, 2 ft.
R-13
10
4,500 - 4,999
0.33
R-38
R-19
R-19
R-9
R-6, 2 ft.
R-17
11
5,000 - 5,499
0.29
R-38
R-19
R-19
R-9
R-6, 2 ft.
R-17
12
5,500 - 5,999
0.27
R-38
R-19
R-21
R-10
Note a
R-22
13
6,000 - 6,499
0.25
R-49
R-19
R-21
R-10
R-9, 4 ft.
R-20
14
6,500 - 6,999
0.25
R-49
R-19
R-30
R-14
Note a
Note a
15
7,000 - 8,499
0.25
R-49
R-19
R-30
R-15
Note a
Note a
16
8,500 - 8,999
0.25
R-49
R-19
R-30
R-28
Note a
Note a
17
9,000 - 12,999
0.25
R-49
R-19
R-30
R-28
Note a
Note a
For SI: 1 foot = 304.8 mm.
a. See Section 502.2.4.13.
PRES<
TABLE 502.2.4(7)
ENVELOPE REQUIREMENTS, GROUP R-2, R-4 OR TOWNHOUSE RESIDENTIAL BUILDINGS
WINDOW AREA 20 PERCENT OF GROSS EXTERIOR WALL AREA
ZONE
HEATING
DEGREE DAYS
MAXIMUM
MINIMUM
Glazing
U-factor
Ceiling
R-value
Exterior wall
R- value
Floor
H-value
Basement wall
R-value
Slab perimeter
B-value and depth
Crawl space wall
f?-value
1
0-499
Any
R-13
R-ll
R-ll
R-0
R-0
R-0
2
500 - 999
Any
R-19
R-ll
R-ll
R-0
R-0
R-5
3
1,000-1,499
Any
R-19
R-ll
R-ll
R-0
R-0
R-5
4
1,500-1,999
0.85
R-19
R-ll
R-ll
R-5
R-0
R-5
5
2,000 - 2,499
0.70
R-19
R-ll
R-ll
R-5
R-0
R-5
6
2,500 - 2,999
0.55
R-30
R-13
R-ll
R-5
R-0
R-5
7
3,000 - 3,499
0.55
R-30
R-13
R-ll
R-5
R-0
R-5
8
3,500 - 3,999
0.55
R-30
R-13
R-ll
R-5
R-0
R-5
9
4,000 - 4,499
0.55
R-38
R-13
R-ll
R-5
R-0
R-5
10
4,500 - 4,999
0.50
R-26
R-ll
R-13
R-6
R-0
R-7
11
5,000 - 5,499
0.50
R-26
R-13
R-ll
R-5
R-0
R-6
12
5,500 - 5,999
0.50
R-30
R-13
R-ll
R-5
R-0
R-6
13
6,000 - 6,499
0.50
R-26
R-13
R-19
R-9
R-5, 4 ft.
R-14
14
6,500 - 6,999
0.45
R-30
R-13
R-19
R-10
R-7, 4 ft.
R-16
15
7,000 - 8,499
0.35
R-38
R-16
R-19
R-ll
R-9, 4 ft.
R-18
16
8,500 - 8,999
0.35
R-38
R-16
R-19
R-17
R-10, 4 ft.
R-18
17
9,000- 12,999
Note a
Note a
Note a
Note a
Note a
Note a
Note a
For SI: 1 foot = 304.8 mm.
a. See Section 502.2.4.13.
2003 INTERNATIONAL ENERGY CONSERVATION CODE 18
33
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
TABLE 502.2.4(8)
PRESCRIPTIVE BUILDING ENVELOPE REQUIREMENTS, GROUP R-2, R-4 OR TOWNHOUSE RESIDENTIAL BUILDINGS
WINDOW AREA 25 PERCENT OF GROSS EXTERIOR WALL AREA
ZONE
HEATING
DEGREE DAYS
MAXIMUM
MINIMUM
Glazing
{/-factor
Ceiling
ff- value
Exterior wall
Ft- value
Floor
ff-value
Basement wall
ff-value
Slab perimeter
ff-value and depth
Crawl space wall
ff-value
1
0-499
Any
R-13
R-ll
R-ll
R-0
R-0
R-0
2
500 - 999
Any
R-19
R-ll
R-ll
R-0
R-0
R-5
3
1,000-1,499
Any
R-19
R-ll
R-ll
R-0
R-0
R-5
4
1,500- 1,999
0.85
R-19
R-ll
R-ll
R-5
R-0
R-5
5
2,000 - 2,499
0.70
R-19
R-ll
R-ll
R-5
R-0
R-5
6
2,500 - 2,999
0.55
R-30
R-13
R-ll
R-5
R-0
R-5
7
3,000 - 3,499
0.55
R-30
R-13
R-ll
R-5
R-0
R-5
8
3,500 - 3,999
0.55
R-30
R-13
R-ll
R-5
R-0
R-5
9
4,000 - 4,499
0.54
R-30
R-13
R-ll
R-5
R-0
R-5
10
4,500 - 4,999
0.53
R-30
R-13
R-ll
R-5
R-0
R-6
11
5,000 - 5,499
0.52
R-30
R-13
R-ll
R-5
R-0
R-6
12
5,500 - 5,999
0.51
R-30
R-13
R-ll
R-6
R-0
R-6
13
6,000 - 6,499
0.51
R-30
R-13
R-19
R-10
R-7, 4 ft.
R-16
14
6,500 - 6,999
0.45
R-30
R-13
R-19
R-10
R-7, 4 ft.
R-16
15
7,000 - 8,499
0.35
R-38
R-16
R-19
R-ll
R-9, 4 ft.
R-18
16
8,500 - 8,999
0.35
R-38
R-16
R-19
R-17
R-10, 4 ft.
R-18
17
9,000- 12,999
Note a
Note a
Note a
Note a
Note a
Note a
Note a
For SI: 1 foot = 304.8 mm.
a. See Section 502.2.4.13
TABLE 502.2.4(9)
PRESCRIPTIVE BUILDING ENVELOPE REQUIREMENTS, GROUP R-2, R-4 OR TOWNHOUSE RESIDENTIAL BUILDINGS
WINDOW AREA 30 PERCENT OF GROSS EXTERIOR WALL AREA
ZONE
HEATING
DEGREE DAYS
MAXIMUM
MINIMUM
Glazing
(/•factor
Celling
ff-value
Exterior wall
ff-value
Floor
ff-value
Basement wall
ff-value
Slab perimeter
ff-value and depth
Crawl space wall
ff-value
1
0-499
0.90
R-13
R-ll
R-ll
R-0
R-0
R-0
2
500 - 999
0.75
R-19
R-ll
R-ll
R-0
R-0
R-3
3
1,000- 1,499
0.70
R-19
R-ll
R-ll
R-0
R-0
R-4
4
1,500-1,999
0.65
R-26
R-ll
R-ll
R-5
R-0
R-5
5
2,000 - 2,499
0.57
R-38
R-13
R-ll
R-5
R-0
R-6
6
2,500 - 2,999
0.47
R-38
R-13
R-19
R-7
R-0
R-8
7
3,000 - 3,499
0.47
R-38
R-13
R-19
R-7
R-0
R-9
8
3,500 - 3,999
0.46
R-38
R-13
R-19
R-8
R-4, 2 ft.
R-9
9
4,000 - 4,499
0.46
R-38
R-13
R-19
R-9
R-6, 2 ft.
R-13
10
4,500 - 4,999
0.45
R-38
R-13
R-19
R-9
R-6, 2 ft.
R-15
11
5,000 - 5,499
0.45
R-38
R-13
R-19
R-10
R-8, 2 ft.
R-18
12
5,500 - 5,999
0.44
R-38
R-13
R-19
R-10
R-8, 2 ft.
R-18
13
6,000 - 6,499
0.44
R-38
R-19
R-19
R-10
R-8, 4 ft.
R-18
14
6,500 - 6,999
0.38
R-38
R-19
R-19
R-10
R-8, 4 ft.
R-18
15
7,000 - 8,499
0.32
R-49
R-21
R-30
R-18
Note a
Note a
16
8,500 - 8,999
0.32
R-49
R-21
R-30
Note a
Note a
Note a
17
9,000 - 12,999
Note a
Note a
Note a
Note a
Note a
Note a
Note a
For SI: 1 foot = 304.8 mm.
a. See Section 502.2.4.13
34
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
§©2.2.4.5 Truss/rafter construction. "Ceiling /?-value"
assumes standard truss or rafter construction. Where
raised-heel trusses or other construction techniques are
employed to obtain the full height of ceiling insulation
over the exterior wall top plate, R-30 shall be permitted to
be used where R-38 is required in the table, and R-38
shall be permitted to be used where R-49 is required.
502.2.4.6 Doors. Opaque doors in the building envelope
shall have a maximum [/-factor of 0.35. One door shall
be exempt from this requirement.
502.2.4.7 Ceilings. "Ceiling /?-value" shall be required
for flat or "cathedral" (inclined) ceilings.
502.2.4.8 Floors. "Floor i?-value" shall apply to floors
over unconditioned spaces. A floor over outside air shall
meet the requirement for "Ceiling /?-value."
502.2.4.9 Basement walls. Basement wall insulation
shall be installed in accordance with Section 502.2.1.6.
502.2.4.10 Unhealed slabs. Slab perimeter insulation
shall be installed in accordance with Section 502.2.1.4.
502.2.4.11 Heated slabs. R-2 shall be added to the "Slab
perimeter R- value" where the slab is heated.
502.2.4.12 Crawl space walls. "Crawl space wall
/{-value" shall apply to unventilated crawl spaces only.
Crawl space insulation shall be installed in accordance
with Section 502.2.1.5.
TABLE 502.2.4.18(1)
164NCH O.C. STEEL-FRAMED WALL EQUIVALENT ^-VALUES
502.2.4.13 Tables mot applicable. The particular cli-
mate range indicated by Note a in Tables 502.2.4(4),
502.2.4(6), 502.2.4(7), 502.2.4(8) and 502.2.4(9) shall
not be used with the indicated envelope component(s) to
demonstrate compliance under Section 502.2.4.
502.2.4.14 Climates greater than 13,000 HDD. These
tables shall not be used for climates greater than or equal
to 13,000 HDD.
502.2.4.15 Fenestration solar beat gain coefficient. In
locations with HDD less than 3,500, fenestration prod-
ucts shall also meet the requirements of Section 502. 1.5.
502.2.4.16 Steel-framed wall construction. Where
steel framing is used in wall construction, the wall assem-
bly shall meet the equivalent wall cavity and sheathing
fi-values in Table 502.2.4.16(1) or 502.2.4.16(2), based
on the "on-center" (o.c.) dimension of the steel studs and
the required /?-value for wood-framed walls determined
in accordance with Section 502.2.4, and utilizing any
combination of cavity and sheathing insulation set off by
commas in Table 502.2.4.16(1) or 502.2.4.16(2).
502.2.4.17 Hngb-mass wall construction). Exterior
walls constructed of high-mass materials having heat ca-
pacity greater than or equal to 6 Btu/ ft 2 • °F [ 1 .06 kJ/(m 2
• K)] of exterior wall area shall meet the equivalent insu-
lation fl-values in Table 502.2.4.17(1) or 502.2.4.17(2),
based on the placement of the insulation, the HDD of the
building location, and the required /?-value for
wood-framed walls determined in accordance with Sec-
tion 502.2.4.
WOOD-FRAMED
WALL fl-VALUE a
EQUIVALENT STEEL-
FRAMED WALL CAVITY AND SHEATHING
H-VALUE
R-ll
R-O+R-9, R-ll+R-4, R-15+R-3, R-21+R-2
R-13
R-ll+R-5, R-15+R-4, R-21+R-3
R-14
R-ll+R-6, R-13+R-5, R-19+R-4
R-15
R-ll+R-6, R-15+R-5, R-19+R-4
R-16
R-ll+R-8, R-15+R-7, R-21+R-6
R-17
R-ll+R-9, R-13+R-8, R-19+R-7
R-18
R-ll+R-9, R-15+R-8, R-21+R-7
R-19
R-ll+R-10, R-13+R-9, R-19+R-8, R-25+R-7
R-20
R-ll+R-10, R-13+R-9, R-19+R-8
R-21
R-13+R-10, R-19+R-9, R-25+R-8
R-22
R-13+R-10.R-19+R-9
R-24
R-19+R-10,R-25+R-9
R-25
R-19+R-10
R-26
R-19+R-11.R-21+R-10
For SI: 1 inch = 25.4 mm.
a. As required by Section 502.2.4 and the tabular entry for "Exterior wall
«-value" shown in Tables 502.2.4(1) through 502.2.4(9), as applicable.
TABLE 502.2 .4.18(2)
24-INCH O.C. STEEL FRAMED WALL EQUIVALENT R-VALUES
WOOD-FRAMED
WALL ft- VALUE a
EQUIVALENT STEEL-
FRAMED WALL CAVITY AND SHEATHING
fl-VALUE
R-ll
R-0+R-9, R-ll+R-3, R-15+R-2, R-25+R-0
R-13
R-ll+R-4, R-15+R-3, R-19+R-2
R-14
R-ll+R-5, R-13+R-4, R-15+R-3, R-21+R-2
R-15
R-ll+R-5, R-13+R-4, R-19+R-3, R-21+R-2
R-16
R-ll+R-7, R-13+R-6, R-19+R-5, R-25+R-4
R-17
R-ll+R-8, R-13+R-7, R-15+R-6, R-21+R-5
R-18
R-ll+R-8, R-13+R-7, R-19+R-6, R-25+R-5
R-19
R-ll+R-9, R-13+R-8, R-15+R-7, R-21+R-6
R-20
R-ll+R-9, R-13+R-8, R-19+R-7, R-21+R-6
R-21
R-ll+R-9, R-15+R-8, R-21+R-7
R-22
R-ll+R-10, R-13+R-9, R-19+R-8, R-21+R-7
R-24
R-ll+R-10, R-15+R-9, R-19+R-8
R-25
R-13+R-10, R-19+R-9, R-21+R-8
R-26
R-15+R-10, R-19+R-9, R-25+R-8
For SI: 1 inch = 25.4 mm.
a. As required by Section 502.2.4 and the tabular entry for "Exterior wall
fl-value" shown in Tables 502.2.4(1) through 502.2.4(9), as applicable.
2003 INTERNATIONAL ENERGY CONSERVATION CODE
35
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
TABLE 502.2.4.17(1)
HIGH-MASS WALL EQUIVALENT H-VALUES
INSULATION PLACED ON THE EXTERIOR OF THE WALL
OR WITH INTEGRAL INSULATION
WOOD-FRAMED
WALL fl-VALUE a
EQUIVALENT HIGH-MASS WALL ff-VALUE
HDD 0-1,999
HDD 2,000 - 3,999
HDD 4,000 - 5,499
HDD 5,500 - 6,499
HDD 6,500 - 8,499
HDD > 8,500
R-ll
R-6
R-6
R-7
R-8
R-9
R-10
R-13
R-6
R-6
R-8
R-9
R-10
R-ll
R-14
R-6
R-7
R-8
R-9
R-10
R-ll
R-15
R-7
R-7
R-8
R-9
R-10
R-12
R-16
R-7
R-7
R-8
R-9
R-ll
R-12
R-17
R-7
R-7
R-9
R-10
R-ll
R-13
R-18
R-7
R-7
R-9
R-10
R-ll
R-13
R-19
R-8
R-9
R-10
R-ll
R-13
R-15
R-20
R-8
R-9
R-10
R-ll
R-13
R-16
R-21
R-8
R-9
R-10
R-12
R-14
R-16
R-22
R-8
R-9
R-10
R-12
R-14
R-17
R-23
R-9
R-9
R-ll
R-12
R-14
R-17
R-24
R-9
R-9
R-ll
R-12
R-14
R-17
R-25
R-9
R-10
R-ll
R-13
R-15
R-18
R-26
R-9
R-10
R-ll
R-13
R-15
R-18
a. As required by Section 502.2.4 and the tabular entry for "Exterior wall R -value" shown in Tables 502.2.4(1) through 502.2.4(9), as applicable.
TABLE 502.2.4.17(2)
HIGH-MASS WALL EQUIVALENT H-VALUES
INSULATION PLACED ON THE INTERIOR OF THE WALL
WOOD-FRAMED
WALL R-VALUE 3
EQUIVALENT HIGH-MASS WALL R-VALUE
HDD 0-1,999
HDD 2,000 - 3,999
HDD 4,000 - 5,499
HDD 5,500 - 6,499
HDD 6,500 - 8,499
HDD > 8,500
R-ll
R-10
R-10
R-ll
R-ll
R-12
R-12
R-13
R-ll
R-ll
R-12
R-12
R-14
R-14
R-14
R-12
R-12
R-12
R-13
R-15
R-15
R-15
R-13
R-13
R-13
R-14
R-15
R-15
R-16
R-13
R-13
R-13
R-15
R-15
R-15
R-17
R-14
R-14
R-14
R-15
R-16
R-16
R-18
R-15
R-15
R-15
R-19
R-16
R-16
R-19
R-16
R-16
R-16
R-20
R-19
R-19
R-20
R-16
R-16
R-16
R-21
R-20
R-20
R-21
R-17
R-17
R-17
R-21
R-21
R-21
R-22
R-17
R-17
R-17
R-22
R-21
R-21
R-23
R-18
R-18
R-18
R-22
R-22
R-22
R-24
R-19
R-19
R-19
R-22
R-22
R-22
R-25
R-20
R-20
R-20
R-22
R-22
R-22
R-26
R-21
R-21
R-21
R-23
R-23
R-23
a. As required by Section 502.2.4 and the tabular entry for "Exterior wall if-value" shown in Tables 502.2.4(1) through 502.2.4(9), as applicable.
36
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
502.2.4.18 St
When truss-type, cold-formed steel framing is used in
roof/ceiling construction, the roof/ceiling assembly shall
meet the equivalent insulation i?-values in Table
502.2.4.18(1).
When C-shaped, cold-formed steel framing is used in
roof/ceiling construction, the steel roof/ceiling assembly
shall meet the equivalent wood framed {/^-factors in Ta-
ble 502.2.4.18(2).
TABLE 502.2.4.113(11)
TRUSS TYPE COLD-FORMED STEEL ROOF/CEI1
EQUIVALENT H-VALUES 3
WOOD-FRAMED
ROOF/CEILING
fi-VALUE b
TRUSS TYPE COLD-FORMED STEEL
CAVITY AMD CONTINUOUS INSULATION
B-VALUE, 24 INCHES ON CENTER
R-13
R-19, R-13 + R-3
R-19
R-26, R-19 + R-3
R-26
R-38, R-26 + R-3
R-30
R-38, R-30 + R-3
R-38
R-49, R-38 + R-5
R-49
Not applicable
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm.
a. This table applies to cold-formed, steel-truss roof framing spaced at 24
inches on center and where the penetrations of the truss members through
the cavity insulation do not exceed three penetrations of the truss members
through the cavity insulation for each 4-foot length of the truss.
b. As required by Section 502.2.4 and the tabular entry for "Ceiling K-value"
shown in Tables 502.2.4(1) through 502.2.4(9).
c. The cavity R-value requirement is listed first, followed by the continuous
insulation /{-value requirement.
502.2.4.19 Steel-framed floor comstractiom. When
C-shaped, cold-formed steel framing is used in floor con-
struction, the steel floor assembly shall meet the equiva-
lent wood framed f/y-factors in Table 502.2.4.19.
502.2.5 Prescriptive path for additions amid window re=
placements. As an alternative to demonstrating compliance
with Section 402 or 502.2, additions with a conditioned
floor area less than 500 square feet (46.5 m 2 ) to existing sin-
gle-family residential buildings and structures shall meet
the prescriptive envelope component criteria in Table
502.2.5 for the designated heating degree days (HDD) ap-
plicable to the location. The {/-factor of each individual fen-
estration product (windows, doors and skylights) shall be
used to calculate an area-weighted average fenestration
product {/-factor for the addition, which shall not exceed the
applicable listed values in Table 502.2.5. For additions,
other than sunroom additions, the total area of fenestration
products shall not exceed 40 percent of the gross wall and
roof area of the addition. The R- values for opaque thermal
envelope components shall be equal to or greater than the
applicable listed values in Table 502.2.5. Replacement fen-
estration products (where some or all of an existing fenestra-
tion unit is replaced with an entire new replacement unit,
including the frame, sash and glazing) shall meet the pre- []
scriptive fenestration {/-factor criteria in Table 502.2.5 for
the designatedUDD applicable to the location.
Conditioned sunroom additions shall maintain thermal
isolation; shall not be used as kitchens or sleeping rooms;
and shall be served by a separate heating or cooling system,
or be thermostatically controlled as a separate zone of the
existing system.
Fenestration products used in additions and as replace-
ment windows in accordance with this section shall also
meet the requirements of Section 502.1.5 in locations with
HDD less than 3,500.
SECTION 503
1ECHANICAL
ITS
503.3.2 Temperature and hpmmidlty controls. Tempera-
ture and humidity controls shall be provided in accordance
with Sections 503.3.2.1 through 503.3.2.4.
503.3.2.1 System comtrols. Each dwelling unit shall be
considered a zone and be provided with thermostatic
controls responding to temperature within the dwelling
unit. Each heating and cooling system shall include at
least one temperature control device.
ik Replacement skylights shall have a maxi-
mum {/-factor of 0.60 when installed in any location |
above 1,999 HDD.
503.1 General. This section covers mechanical systems and
equipment used to provide heating, ventilating and air-condi-
tioning functions. This section assumes that residential build-
ings and dwelling units therein will be designed with individual
HVAC systems. Where equipment not shown in Table 503.2 is
specified, it shall meet the provisions of Sections 803.2.2 and
803.3.2.
503.2 Mechanical equipment efficiency. Equipment shown
in Table 503.2 shall meet the specified minimum performance.
Data furnished by the equipment supplier, or certified under a
nationally recognized certification procedure, shall be used to
satisfy these requirements. All such equipment shall be in-
stalled in accordance with the manufacturer's instructions.
503.3 HVAC systems. HVAC systems shall meet the criteria
set forth in Sections 503.3.1 through 503.3.3.
[M] 503.3.1 Load calculations. Heating and cooling sys-
tem design loads for the purpose of sizing systems and
equipment shall be determined in accordance with the pro-
cedures described in the ASHRAE Fundamentals Hand-
book. Heating and cooling loads shall be adjusted to account
for load reductions that are achieved when energy recovery
systems are utilized in the HVAC system in accordance with
the ASHRAE HVAC Systems and Equipment Handbook.
Alternatively, design loads shall be determined by an ap-
proved equivalent computation procedure, using the design
parameters specified in Chapter 3.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
37
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
TABLE 502.2.4.18(2)
C-SHAPED COLD-FORMED STEEL ROOF/CEILING EQUIVALENT ^FACTORS 3
For SI: 1 inch = 25.4 mm.
a. Linear interpolation is permitted for determining (/-factors which are between those given in the table.
b. Applies to steel framing up to a maximum thickness of 0.064 inches (16 gage.)
c. As required by Section 502.2.4 and the tabular entry for "Ceiling /?-value" shown in Tables 502.2.4(1) through 502.2.4(9), as applicable.
TABLE 502.2.4.19
C-SHAPED COLD-FORMED STEEL FLOOR EQUIVALEP*
1 W,-FACTQRS a
FRAMING b
SPACING
R-11 c
R-13 c
R-15 c
R-19 c
R-21 c
R-25 c
R-30
Steel
___Wood Equivalent
16 inches
o.c.
0.0725
0.0652
0.0595
0.0477
0.0452
0.0382
0.0327
2x6
0.1058
0.1031
0.1005
0.0583
0.0523
NA
NA
2x8
0.1058
0.1031
0.1005
0.0957
0.0935
0.0548
NA
2x10
0.1058
0.1031
0.1005
0.0957
0.0935
0.0894
0.0838
2x12
0.1058
0.1031
0.1005
0.0957
0.0935
0.0894
0.0838
Steel
_____Wood Equivalent
2x6
24 inches
o.c.
0.0708
0.0633
0.0574
0.0464
0.0436
0.0370
0.0317
0.0941
0.0907
0.0875
0.0538
0.0486
NA
NA
2x8
0.0941
0.0907
0.0875
0.0818
0.0792
0.0488
NA
2x10
0.0941
0.0907
0.0875
0.0818
0.0792
0.0745
0.0697
2x12
0.0941
0.0907
0.0875
0.0818
0.0792
0.0745
0.0697
For SI: 1 inch = 25.4 mm.
NA = Not applicable.
i a. Linear interpolation is permitted for determining (/-factors which are between those given in the table.
| b. Applies to steel framing up to a maximum thickness of 0.064 inches (16 gage.)
| c. As required by Section 502.2.4 and the tabular entry for "Floor R-value" shown in Tables 502.2.4(1) through 502.2.4(9), as applicable.
38
2003 INTERNATIONAL ENERGY CONSERVATION CODE*
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
TABLE 502.2.5
PRESCRIPTIVE ENVELOPE COMPONENT CRITERIA
ADDITIONS TO AND REPLACEMENT WINDOWS FOR EXISTING
DETACHED ONE- AND TWO-FAMILY DWELLINGS
HEATING
DEGREE DAYS
MAXIMUM
MINIMUM
Fenestration
U-factor e
Ceiling
B-value a,e
Wall fl-value e
Floor R-value
Basement wall
B-value b
Slab perimeter
R-value and
depth
Crawl space
wall
R-value d
0-1,999
0.75
R-26
R-13
R-ll
R-5
R-0
R-5
2,000 - 3,999
0.50
R-30
R-13
R-19
R-8
R-5, 2 ft.
R-10
4,000 - 5,999
0.40
R-38
R-18
R-21
R-10
R-9, 2 ft.
R-19
6,000 - 8,499
0.35
R-49
R-21
R-21
R-ll
R-13, 4 ft.
R-20
8,500 - 12,999
0.35
R-49
R-21
R-21
R-19
R-18, 4 ft.
R-20
For SI: 1 foot = 304.8 mm.
a. "Ceiling R-value" shall be required for flat or inclined (cathedral) ceilings. Floors over outside air shall meet "Ceiling R-value" requirements.
b. Basement wall insulation shall be installed in accordance with Section 502.2.1.6.
c. Slab perimeter insulation shall be installed in accordance with Section 502.2.1.4. An additional R-2 shall be added to "Slab perimeter R- value" in the table if
the slab is heated.
d. "Crawl space wall R-value" shall apply to unventilated crawl spaces only. Crawl space insulation shall be installed in accordance with Section 502.2.1.5.
e. Sunroom additions shall be required to have a maximum fenestration ([/-factor of 0.50 in locations with 2,000 - 12,999 HDD. In locations with 0-5,999 HDD,
the minimum ceiling /{-value shall be R-19 and the minimum wall R-value shall be R-13. In locations with 6,000 - 12,999 HDD, the minimum ceiling R-value
shall be R-24 and the minimum wall R-value shall be R-13.
TABLE 503.2
MINIMUM EQUIPMENT PERFORMANCE
EQUIPMENT
CATEGORY
SUBCATEGORY 6
REFERENCED STANDARD
MINIMUM PERFORMANCE
Air-cooled heat pumps, Heating mode < 65,000 Btu/h
cooling capacity
Split systems
Single package
ARI 210/240
6.8 HSPF ab
6.6 HSPF ab
Gas-fired or oil-fired furnace < 225,000 Btu/h
—
DOE 10 CFR Part 430,
Subpart B, Appendix N
AFUE 78% b
E, 80% c
Gas-fired or oil-fired steam and hot-water boilers
< 300,000 Btu/h
—
DOE 10 CFR Part 430,
Subpart B, Appendix N
AFUE 80% b ' d
Air-cooled air conditioners and heat pumps, Cooling
mode <65,000 Btu/h cooling capacity
Split systems
Single package
ARI 210/240
10.0 SEER"
9.7 SEER"
For SI: 1 British thermal unit per hour = 0.2931 W.
a. For multicapacity equipment, the minimum performance shall apply to each capacity step provided. Multicapacity refers to manufacturer-published ratings
for more than one capacity mode allowed by the product's controls.
b. This is used to be consistent with the National Appliance Energy Conservation Act (NAECA) of 1987 (Public Law 100-12).
c. These requirements apply to combination units not covered by NAECA (three-phase power or cooling capacity 65,000 Btu/h).
d. Except for gas-fired steam boilers for which the minimum AFUE shall be 75 percent.
e. Seasonal rating.
503.3.2.2 Ttoeomostattk control capabilities. Where
used to control comfort heating, thermostatic controls
shall be capable of being set locally or remotely by ad-
justment or selection of sensors down to 55°F (13°C) or
lower.
Where used to control comfort cooling, thermostatic
controls shall be capable of being set locally or remotely
by adjustment or selection of sensors up to 85°F (29°C)
or higher.
Where used to control both comfort heating and cool-
ing, thermostatic controls shall be capable of providing a
temperature range or deadband of at least 5°F (A3°C)
within which the supply of heating and cooling energy is
shut off or reduced to a minimum.
Exceptions:
1 . Special occupancy or special usage conditions
approved by the code official.
2. Thermostats that require manual changeover
between heating and cooling modes.
503.3.2.3 Heat pump auxiliary heat. Heat pumps hav-
ing supplementary electric resistance heaters shall have
controls that prevent heater operation when the heating
load is capable of being met by the heat pump. Supple-
mental heater operation is not allowed except during out-
door coil defrost cycles not exceeding 15 minutes.
2003 INTERNATIONAL ENERGY CONSERVATION CODE
39
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
503.3.2.4 Humidistat. Humidistats used for comfort
purposes shall be capable of being set to prevent the use
of fossil fuel or electricity to reduce relative humidity be-
low 60 percent or increase relative humidity above 30
percent.
503.3.3 Distribution system, construction and insula-
tion. Distribution systems shall be constructed and insu-
lated in accordance with Sections 503.3.3.1 through
503.3.3.7.
503.3.3.1 Piping insulation. All HVAC system piping
shall be thermally insulated in accordance with Table
503.3.3.1.
Exceptions:
1. Factory-installed piping within HVAC equip-
ment tested and rated in accordance with Sec-
tion 503.2.
2. Piping that conveys fluids which have a design
operating temperature range between 55°F and
105°F(13°Cand41°C).
3. Piping that conveys fluids which have not been
heated or cooled through the use of fossil fuels
or electricity.
503.3.3.2 Other insulation thicknesses. Insulation
thicknesses in Table 503.3.3.1 are based on insulation
having thermal resistivity in the range of 4.0 to 4.6
h ■ ft 2 • °F/Btu/inch (0.704 to 0.810 m 2 • K/W per 25
mm) of thickness on a flat surface at a mean temperature
of 75°F (24°C).
Minimum insulation thickness shall be increased for
materials having values less than 4.0, or shall be permit-
ted to be reduced for materials having thermal resistivity
values greater than 4.6 in accordance with Equation
5-15.
4.6 x Table 503.3.3.1 Thickness New
— = Minumum
Actual Resistivity
Thickness
(Equation 5-15)
For materials with thermal resistivity values less than
4.0, the minimum insulation thickness shall be permitted
to be increased in accordance with Equation 5-16.
4.0 x Table 503.3.3.1 Thickness ,. New
— = Minumum
Actual Resistivity
Thickness
(Equation 5-16)
503.3.3.3 Duct and plenum insulation. All supply and
return-air ducts and plenums installed as part of an
HVAC air-distribution system shall be thermally insu-
lated in accordance with Table 503.3.3.3, or where such
ducts or plenums operate at static pressures greater than 2
inches w.g. (500 Pa), in accordance with Section
503.3.3.4.1.
Exceptions:
1 . Factory-installed plenums, casings or ductwork
furnished as a part of the HVAC equipment
tested and rated in accordance with Section
503.2.
2. Ducts within the conditioned space that they
serve.
[M] 503.3.3.4 Duct construction. Ductwork shall be
constructed and erected in accordance with the Interna-
tional Mechanical Code.
TABLE 503.3.3.1
MINIMUM PIPE INSULATION
(thickness in inches)
PIPING SYSTEM TYPES
FLUID
TEMPERATURE
RANGE, °F
PIPE SIZES 3
Runouts
up to 2 " b
T'and less
1.25" to 2"
2.5" to 4"
5" to 6"
8" and larger
HEATING SYSTEMS
Steam and hot water
High pressure/temperature
306-450
l>/ 2
2>/ 2
2V 2
3
3V 2
3V 2
Medium pressure/temperature
251-305
iv 2
2
2%
2V 2
3
3
Low pressure/temperature
201-250
1
1V 2
iv 2
2
2
2
Low temperature
106-200
%
1
1
l'/ 2
1V 2
l'/ 2
Steam condensate (for feed water)
Any
1
1
1V 2
2
2
2
COOLING SYSTEMS
Chilled water, refrigerant and brine
40-55
%
%
%
1
1
1
Below 40
1
1
l'/ 2
1V 2
1V 2
1V 2
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, °C = [(°F)-32]/1.8.
a. For piping exposed to outdoor air, increase insulation thickness by 0.5 inch.
b. Runouts not exceeding 12 feet in length to individual terminal units.
40
2003 INTERNATIONAL ENERGY CONSERVATION CODE 18
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
TABLE 503.3.3.3
MINIMUM DUCT INSULATION 8
ANNUAL HEATING DEGREE DAYS
INSULATION B-VALUE (h • ft 2 • °F.)/Btu d
Ducts in unconditioned attics or outside
building
Ducts in unconditioned basements, crawl spaces,
garages, and other unconditioned spaces
Supply
Return
Supply
Return b
< 1,500
8
4
4
1,500 to 3,500
8
4
6
2
3,501 to 7,500
8
4
8
2
> 7,500
11
6
11
2
For SI: °C= [(°F)-32]/1.8, 1 (hft 2o F)/Btu= 0.176 (m 2 K)AV, 1 foot= 304.5 mm.
a. Insulation R- values shown are for the insulation as installed and do not include film resistance. The required minimum R- values do not consider water vapor
transmission and condensation. Where control of condensation is required, additional insulation, vapor retarders or both shall be provided to limit vapor trans-
mission and condensation. For ducts that are designed to convey both heated and cooled air, duct insulation shall be as required by the most restrictive condi-
tion. Where exterior walls are used as plenums, wall insulation shall be as required by the most restrictive condition of this section.
b. Insulation on return ducts in basements is not required.
c. Unconditioned spaces include ventilated crawl spaces and framed cavities in those floors, wall and ceiling assemblies which separate conditioned space from
unconditioned space or outside air, and are uninsulated on the side facing away from the condition space.
d. Insulation resistance measured on a horizontal plane in accordance with ASTM C 518, at a mean temperature of 75 °F.
§©3.3.3.4.1 Hig3i-aimdl mediaiinni-pressiiire duct sys-
tems. All ducts and plenums operating at static pres-
sures greater than 2 inches w.g. (500 Pa) shall be
insulated and sealed in accordance with Section
803.2.8. Ducts operating at static pressures in excess
of 3 inches w.g. (750 Pa) shall be leak tested in accor-
dance with Section 803.3.6. Pressure classifications
specific to the duct system shall be clearly indicated
on the construction documents in accordance with the
International Mechanical Code.
§©3.3.3.4.2 Low=prassnre duct systems. All longi-
tudinal and transverse joints, seams and connections
of supply and return ducts operating at static pressures
less than or equal to 2 inches w.g. (500 Pa) shall be se-
curely fastened and sealed with welds, gaskets,
mastics (adhesives), mastic-plus-embedded-fabric
systems or tapes installed in accordance with the man-
ufacturer's installation instructions. Pressure classifi-
cations specific to the duct system shall be clearly
indicated on the construction documents in accor-
dance with the International Mechanical Code.
Exception: Continuously welded and lock-
ing-type longitudinal joints and seams on ducts op-
erating at static pressures less than 2 inches w.g.
(500 Pa) pressure classification.
§03.3.3.4.3 Sealing required. All joints, longitudinal
and transverse seams, and connections in ductwork,
shall be securely fastened and sealed with welds, gas-
kets, mastics (adhesives), mastic-plus-embed-
ded-fabric systems or tapes. Tapes and mastics used to
seal ductwork shall be listed and labeled in accor-
dance with UL 181 A or UL 18 IB. Duct connections
to flanges of air distribution system equipment shall
be sealed and mechanically fastened. Unlisted duct
tape is not permitted as a sealant on any metal ducts.
§©3.3.3.§ Mechanical ventilation. Each mechanical
ventilation system (supply or exhaust, or both) shall be
equipped with a readily accessible switch or other means
for shutoff, or volume reduction and shutoff , when venti-
lation is not required. Automatic or gravity dampers that
close when the system is not operating shall be provided
for outdoor air intakes and exhausts.
§03.3.3.6 Transport energy. The air transport factor for
each all-air system shall be not less than 5.5 when calcu-
lated in accordance with Equation 5-17. Energy for
transfer of air through heat-recovery devices shall not be
included in determining the air transport factor.
Air Transport Factor ;
Space SensibleHeat Removal"
Supply + Return Fans(s) Power Input*
(Equation S-17)
a. Expressed in consistent units, either Btu/h or Watts.
For purposes of these calculations, space sensible heat
removal is equivalent to the maximum coincident design
sensible cooling load of all spaces served for which the
system provides cooling. Fan power input is the rate of
energy delivered to the fan prime mover.
Air and water, all-water and unitary systems employ-
ing chilled, hot, dual-temperature or condenser wa-
ter-transport systems to space terminals shall not require
greater transport energy (including central and terminal
fan power and pump power) than an equivalent all-air
system providing the same space sensible heat removal
and having an air transport factor of not less than 5.5.
§03.3.3.7 Balancing. The HVAC system design shall
provide means for balancing air and water systems. Bal-
ancing mechanisms shall include, but not be limited to,
dampers, temperature and pressure test connections, and
balancing valves.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
SECTION 504
SERVICE WATER HEATING
504.1 Scope. The purpose of this section is to provide criteria
for design and equipment selection that will produce energy
savings when applied to service water heating. Water supplies
to ice-making machines and refrigerators shall be taken from a
cold-water line of the water distribution system.
504.2 Water heaters, storage tanks and boilers. Water heat-
ers, storage tanks and boilers shall meet the performance crite-
ria set forth in Sections 504.2.1 and 504.2.2.
504.2.1 Performance efficiency. Water heaters and hot wa-
ter storage tanks shall meet the minimum performance of
water-heating equipment specified in Table 504.2.1. Where
multiple criteria are listed, all criteria shall be met.
Exception: Storage water heaters and hot water storage
tanks having more than 140 gallons (530 L) of storage ca-
pacity need not meet the standby loss (SL) or heat loss
(HL) requirements of Table 504.2. 1 if the tank surface
area is thermally insulated to R-12.5 and if a standing pi-
lot light is not used.
TABLE 504.2.1
MINIMUM PERFORMANCE OF WATER-HEATING EQUIPMENT
CATEGORY
TYPE
FUEL
INPUT
RATING
(gallons)
INPUT TO V T
RATIO
(Btuh/gal)
TEST
METHOD
ENERGY
FACTOR 15
THERMAL
EFFICIENCY
(percent)
STANDBY
LOSS
(percent/hour) 3
NAECA-covered
water-heating
equipment
All
Electric
<12kW
All c
—
Notef
>0.93-0.00132V*
—
—
Storage
Gas
< 75,000 Btu/h
AU e
—
Notef
>0.62-0.0019K*
—
—
Instantaneous
Gas
< 200,000 Btu/h e
All
—
Notef
> 0.62-0.00 19 V*
—
—
Storage
Oil
< 105,000 Btu/h
All
—
Notef
>0.59-0.0019V*
—
—
Instantaneous
Oil
< 210,000 Btu/h
All
—
Notef
> 0.59-0.0019V*
—
—
Pool heater
Gas/oil
All
All
—
Noteg
—
>78%
—
Other
water-heating
equipment 11
Storage
Electric
All
all
—
Noteh
—
—
< 0.30+27/V r *
Storage/
instantaneous
Gas/oil
< 155,000 Btu/h
> 155,000 Btu/h
All
< 4,000
Noteh
—
>78%
<1.3+114/V r *
All
< 4,000
Noteh
—
>78%
< 1.3+95 Ay
<10
>10
> 4,000
> 4,000
Noteh
—
>80%
>77%
< 2.3+67/Vr*
Unfired
storage tanks
—
—
—
All
—
—
—
—
<6.5Btuh/ft 2i *
For SI: 1 British thermal unit per square foot = 3.155 W/m 2 , 1 British thermal unit per hour = 0.2931 W, 1 gallon = 3.785 L, °C = [(°F)-32]/1.8.
a. V r is the storage volume in gallons as measured during the standby loss test. For the purpose of estimating the standby loss requirement using the rated volume
shown on the rating plate, V T should be no less than 0.95 V for gas and oil water heaters and no less than 0.90V for electric water heaters.
b. V is rated storage volume in gallons as specified by the manufacturer.
c. Consistent with National Appliance Energy Conservation Act (NAECA) of 1987.
d. All except those water heaters covered by NAECA.
e. DOE CFR 10; Part 430, Subpart B, Appendix E applies to electric and gas storage water heaters with rated volumes 20 gallons and gas instantaneous water
heaters with input ratings of 50,000 to 200,000 Btu/h.
f. DOE CFR 10; Part 430, Subpart B, Appendix E.
g. ANSIZ21.56.
h. ANSI Z2 1.10.3. When testing an electric storage water heater for standby loss using the test procedure of Section 2.9 of ANSI Z21.10.3, the electrical supply
voltage shall be maintained within ± 1 percent of the center of the voltage range specified on the water heater nameplate. Also, when needed for calculations,
the thermal efficiency (£,) shall be 98 percent. When testing an oil water heater using the test procedures of Sections 2.8 and 2.9 of ANSI Z21 . 1 0.3, the follow-
ing modifications will be made: A vertical length of the flue pipe shall be connected to the flue gas outlet of sufficient height to establish the minimum draft
specified in the manufacturer's installation instructions. All measurements of oil consumption will be taken by instruments with an accuracy of ± 1 percent or
better. The burner shall be adjusted to achieve an hourly Btu input rate within ± 2 percent of the manufacturer's specified input rate with the C0 2 reading as
specified by the manufacturer with smoke no greater than 1 and the fuel pump pressure within ± 1 percent of the manufacturer's specification.
i. Heat loss of tank surface area (Btu/h • ft 2 ) based on 80°F water-air temperature difference.
♦Minimum efficiencies marked with an asterisk are established by preemptive federal law and are printed for the convenience of the user.
42
2003 INTERNATIONAL ENERGY CONSERVATION CODE B
RESIDENTIAL — COMPONENT PERFORMANCE APPROACH
img boilers. Service water-heating equipment shall not be
dependent on year-round operation of space-heating boil-
ers; that is, boilers that have as another function winter space
heating.
1 . Systems with service/space-heating boilers having
a standby loss (Btu/h) (W) less than that calculated
in equation 5-18:
(13.3 • pmd) + 400
as determined by the fixture count method where:
pmd - Probable maximum demand in
gallons/hour as determined in accordance
with the ASHRAE HVAC Applications
Handbook.
n = Fraction of year when outdoor daily
mean temperature exceeds 64.9°F (18°C).
The standby loss is to be determined for a test pe-
riod of 24-hour duration while maintaining a boiler
water temperature of 90°F (32°C) above an ambi-
ent of 60 to 90°F (16 to 32°C) and a 5-foot (1524
mm) stack on appliance.
2. For systems where the use of a single heating unit
will lead to energy savings, such unit shall be uti-
lized.
§©4.3 Swnmniinniiinig pools. Swimming pools shall be provided
with energy-conserving measures in accordance with Sections
504.3.1 through 504.3.3.
§04.3.1 Ora-off switch. All pool heaters shall be equipped
with an ON-OFF switch mounted for easy access to allow
shutting off the operation of the heater without adjusting the
thermostat setting and to allow restarting without relighting
the pilot light.
5041.3.2 Pool covers. Heated swimming pools shall be
equipped with a pool cover.
Exception!: Outdoor pools deriving more than 20 percent
of the energy for heating from renewable sources (com-
puted over an operating season) are exempt from this re-
quirement.
§©4.3.3 Time clocks. Time clocks shall be installed so that
the pump can be set to run in the off-peak electric demand
period and can be set for the minimum time necessary to
maintain the water in a clear and sanitary condition in keep-
ing with applicable health standards.
504.4 Hot water system controls. Automatic-circulating hot
water system pumps or heat trace shall be arranged to be conve-
niently turned off, automatically or manually, when the hot wa-
ter system is not in operation.
§©4.5 Pipe iinsiiBaitioE. For automatic-circulating hot water
systems, piping heat loss shall be limited to a maximum of 17.5
Btu/h per linear foot (16.8 W/m) of pipe in accordance with Ta-
ble 504.5, which is based on design external temperature no
lower than 65°F ( 1 8°C) . For external design temperatures lower
than 65 °F ( 1 8 °C) insulation thickness must be calculated in ac-
cordance with Section 503.3.3.2.
Exceptions Piping insulation is not required when the heat
loss of the piping, without insulation, does not increase the
annual energy requirements of the building.
TABLE 504.5
MINIMUM PIPE INSULATION
(thickness in inches)
SERVICE WATER-
HEATING
TEMPERATURES
(°F)
PIPE SIZES 3
Noncirculating
runouts
Circulating mains and runouts
Up tor
Up to 1.25"
1.5" to 2"
Over 2"
170-180
'/,
1
1'/,
2
140-169
%
v,
1
1'/,
100-139
'/,
'/,
%
1
For SI: 1 inch = 25.4 mm, °C = [(°F)-32]/l .8,
1 Btuh/inch • ft 2 • °F = 0.144 W/(m • K).
a. Nominal iron pipe size and insulation thickness. Conductivity, k = 0.27.
5®4.6 Conservatioini of toot water. Hot water shall be con-
served in accordance with Section 504.6. 1 .
504.6.1 Showers. Shower heads shall have a maximum
flow rate of 2.5 gallons per minute (gpm) (0.158 L/s) at a
pressure of 80 pounds per square inch (psi) (551 kPa) when
tested in accordance with ASME A112.18.1.
5©4.7 Heat traps. Water heaters with vertical pipe risers shall
have a heat trap on both the inlet and outlet of the water heater
unless the water heater has an integral heat trap or is part of a
circulating system.
ELECTRICAL POWER AND L1QS-
SfflS.l Electrical energy comsemnptHOE. In residential build-
ings having individual dwelling units, provisions shall be made
to determine the electrical energy consumed by each tenant by
separately metering individual dwelling units.
505.2 Lightimg power budget. The lighting system shall meet
the applicable provisions of Section 805.
m: Detached one- and two- family dwellings and
townhouses and the dwelling portion of Group R-2 and R-4
residential buildings.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
43
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
■ REQUIREMENTS FOR DETACHED
GNE= AMD TWO-FAMILY DWELLINGS AMD GROUP R-2, R-4 OR
SECTION 601
Scope. This chapter sets forth energy-efficiency-related
requirements for the design and construction of detached one-
and two-family dwellings and Group R-2, R-4 or townhouse
residential buildings.
Exception: Portions of the building envelope that do not en-
close conditioned space.
601.2 Compliance. Compliance shall be demonstrated in ac-
cordance with Section 601.2.1 or 601.2.2.
601.2.1 Residential buildings, detached one- and two-
ffamnnly dwellings. Compliance for detached one- and
two-family dwellings shall be demonstrated by either:
1 . Meeting the requirements of this chapter for buildings
with a glazing area that does not exceed 15 percent of
the gross area of exterior walls; or
2. Meeting the requirements of Chapter 4, or Chapter 5
for detached one- and two-family dwellings.
, Compliance for Group R-2, R-4 or townhouse resi-
dential buildings shall be demonstrated by either:
1 . Meeting the requirements of this chapter for buildings
with a glazing area that does not exceed 25 percent of
the gross area of exterior walls; or
2. Meeting the requirements of Chapter 4, or Chapter 5
for Group R-2, R-4 or townhouse residential build-
ings.
L3 Materials and enpipmmemt. Materials and equipment
shall be identified in a manner that will allow a determination of
their compliance with the applicable provisions of this chapter.
Materials and equipment used to conform to the applicable pro-
visions of this chapter shall be installed in accordance with the
manufacturer's installation instructions.
.3.1 Insulation. The thermal resistance (/?-value) shall
be indicated on all insulation and the insulation installed
such that the R- value can be verified during inspection, or a
certification of the installed R- value shall be provided at the
job site by the insulation installer. Where blown-in or
sprayed insulation is applied in walls, the installer shall pro-
vide a certification of the installed density and /?-value.
Where blown-in or sprayed insulation is applied in the
roof/ceiling assembly, the installer shall provide a certifica-
tion of the initial installed thickness, settled thickness, cov-
erage area, and number of bags of insulating material
installed. Markers shall be provided for every 300 square
feet (28 m 2 ) of area, attached to the trusses, rafters or joists,
and indicate in 1 -inch-high (25 mm) numbers the installed
thickness of the insulation.
601.3.2 Fenestration. The {/-factor of fenestration shall be
determined in accordance with NFRC 100 by an accredited,
independent laboratory, and labeled and certified by the
manufacturer. The solar heat gain coefficient (SHGC) of
fenestration shall be determined in accordance with NFRC
200 by an accredited, independent laboratory, and labeled
and certified by the manufacturer.
601.3.2.1 Default fenestration performance. Where a
manufacturer has not determined a fenestration prod-
uct's [/-factor in accordance with NFRC 100, compli-
ance shall be determined by assigning such products a
default [/-factor from Tables 102.5.2(1) and 102.5.2(2).
When a manufacturer has not determined a fenestration
product's SHGC in accordance with NFRC 200, compli-
ance shall be determined by assigning such products a
default SHGC from Table 102.5.2(3).
601.3.2.2 Air leakage. The air leakage of prefabricated
fenestration shall be determined in accordance with
AAMA/WDMA 101/LS.2 or NFRC 400 by an accred-
ited, independent laboratory, and labeled and certified by
the manufacturer and shall not exceed the values in Table
502.1.4.1. Alternatively, the manufacturer shall certify
that the fenestration is installed in accordance with Sec-
tion 502. 1.4.
601.3.3 Maintenance. Where mechanical or plumbing sys-
tem components require preventive maintenance for effi-
cient operation, regular maintenance requirements shall be
clearly stated and affixed to the component, or the source for
such information shall be shown on a label attached to the
component.
LI Thermal performance criteria. The minimum required
insulation R- value or the area-weighted average maximum re-
quired fenestration [/-factor (other than opaque doors which
are governed by Section 602. 1 .3) for each element in the build-
ing thermal envelope (fenestration, roof/ceiling, opaque wall,
floor, slab edge, crawl space wall and basement wall) shall be in
accordance with the criteria in Table 602. 1 .
The building envelope requirements of Chapter 4 or 5 shall
be used to determine compliance with detached one- and
two-family dwellings with greater than 15-percent glazing
area; Group R-2, R-4 or townhouse residential buildings with
greater than 25-percent glazing area; and any residential build-
ing in climates with heating degree days (HDD) equal to or
greater than 13,000.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
45
SIMPLIFIED PRESCRIPTIVE REQUIREMENTS
TABLE 602.1
SIMPLIFIED PRESCRIPTIVE BUILDING ENVELOPE THERMAL COMPONENT CRITERIA
MINIMUM REQUIRED THERMAL PERFORMANCE (U -FACTOR AND R -VALUE)
CLIMATE
ZONE
HEATING
DEGREE DAYS
MAXIMUM
MINIMUM
Glazing
(Afactor
Ceiling
R-value
Wall
R-value
Floor
R-value
Basement wall
R-value
Slab perimeter
R-value and
depth
Crawl space
wall
R-value
1
0-499
Any
R-13
R-ll
R-ll
R-0
R-0
R-0
2
500 - 999
0.90
R-19
R-ll
R-ll
R-0
R-0
R-4
3
1,000 - 1,499
0.75
R-19
R-ll
R-ll
R-0
R-0
R-5
4
1,500-1,999
0.75
R-26
R-13
R-ll
R-5
R-0
R-5
5
2,000 - 2,499
0.65
R-30
R-13
R-ll
R-5
R-0
R-6
6
2,500 - 2,999
0.60
R-30
R-13
R-19
R-6
R-4, 2 ft.
R-7
7
3,000 - 3,499
0.55
R-30
R-13
R-19
R-7
R-4, 2 ft.
R-8
8
3,500 - 3,999
0.50
R-30
R-13
R-19
R-8
R-5, 2 ft.
R-10
9
4,000 - 4,499
0.45
R-38
R-13
R-19
R-8
R-5, 2 ft.
R-ll
10
4,500 - 4,999
0.45
R-38
R-16
R-19
R-9
R-6, 2 ft.
R-17
11
5,000 - 5,499
0.45
R-38
R-18
R-19
R-9
R-6, 2 ft.
R-17
12
5,500 - 5,999
0.40
R-38
R-18
R-21
R-10
R-9, 4 ft.
R-19
13
6,000 - 6,499
0.35
R-38
R-18
R-21
R-10
R-9, 4 ft.
R-20
14
6,500 - 6,999
0.35
R-49
R-21
R-21
R-ll
R-ll, 4 ft.
R-20
15
7,000 - 8,499
0.35
R-49
R-21
R-21
R-ll
R-13, 4 ft.
R-20
16
8,500 - 8,999
0.35
R-49
R-21
R-21
R-18
R-14,4ft.
R-20
17
9,000 - 12,999
0.35
R-49
R-21
R-21
R-19
R-18, 4 ft.
R-20
For SI: 1 foot = 304.8 mm.
602.1.1 Exterior walls. The sum of the R- values of the insu-
lation materials installed in framing cavities and insulating
sheathing (where used) shall meet or exceed the minimum
required "Wall tf-value" in Table 602.1. Framing, dry wall,
structural sheathing or exterior siding materials shall not be
considered as contributing, in any way, to the thermal per-
formance of exterior walls. Insulation separated from the
conditioned space by a vented space shall not be counted to-
wards the required R- value.
602.1.1.1 Mass walls. Mass walls shall be permitted to
meet the criteria in Table 602. 1.1.1(1) based on the insu-
lation position and the climate zone where the building is
located. Other mass walls shall meet the frame wall crite-
ria for the building type and the climate zone where the
building is located, based on the sum of interior and exte-
rior insulation. Walls with "exterior insulation" position
have the entire effective mass layer interior to an insula-
tion layer. Walls with "integral insulation" position have
either insulation and mass materials well mixed as in
wood (logs); or substantially equal amounts of mass ma-
terial on the interior and exterior of insulation as in con-
crete masonry units with insulated cores or masonry
cavity walls. Walls with interior insulation position have
the mass material located exterior to the insulating mate-
rials). Walls not meeting the above descriptions for exte-
rior or integral positions shall meet the requirements for
"other mass walls" in Table 602. 1 . 1 . 1 ( 1 ). The fl-value of
the mass assembly for typical masonry construction shall
be taken from Table 602.1.1.1(2). The mass assembly
fl-value for a solid concrete wall with a thickness of 4
inches (102 mm) or greater is R- 1.1. fl- values for other
assemblies are permitted to be based on the hot box tests
referenced in ASTM C 236 or ASTM C 976, two-dimen-
sional calculations or isothermal plane calculations.
602.1.1.2 Steel-frame walls. The minimum required
W-values for steel-frame walls shall be in accordance
with Table 602.1.1.2.
TABLE 602.1.1.2
STEEL-FRAME WALL MINIMUM
PERFORMANCE REQUIREMENTS [R-VALUE)
HDD
EQUIVALENT STEEL-FRAME WALL
CAVITY AND SHEATHING R-VALUE 8
0- 1,999
R-l 1 + R-5, R-15 + R-4, R-21 + R-3
2,000 - 3,999
R-ll + R-5, R-15 + R-4, R-21 + R-3
4,000 - 5,999
R-ll + R-9, R-15 + R-8, R-21 + R-7
6,000 - 8,499
R-13 + R-10, R-19 + R-9, R-25 + R-8
8,500 - 12,999
R-13 + R-10, R-19 + R-9, R-25 + R-8
The cavity insulation R-value requirement is listed first, followed by the
sheathing /f-value requirement.
46
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
SIMPLIFIED PRESCRIPTIVE REQUIREMENTS
TABLE 602.1.1.1(H)
MASS WALL PRESCRIPTIVE BUILDING ENVELOPE REQUIREMENTS
MASS WALL ASSEMBLY R-VALUE"
Building
Location
Exterior or Integral Insulation
Other Mass Walls
Zone
Heating Degree Days
Residential Buildings
Residential Buildings
1
0-499
R-3.8
R-9.7
2
500 - 999
R-4.8
R-9.7
3
1,000- 1,499
R-4.8
R-9.7
4
1,500-1,999
R-8.1
R-10.8
5
2,000 - 2,499
R-8.9
R-10.8
6
2,500 - 2,999
R-8.9
R-10.8
7
3,000 - 3,499
R-8.9
R-10.8
8
3,500 - 3,999
R-8.9
R-10.8
9
4,000 - 4,499
R-8.9
R-10.9
10
4,500 - 4,999
R-10.4
R-12.3
11
5,000 - 5,499
R-11.9
R-15.2
12
5,500 - 5,999
R-11.9
R-15.2
13
6,000 - 6,499
R-11.9
R-15.2
14
6,500 - 6,999
R-15.5
R-18.4
15
7,000 - 8,499
R-15.5
R-18.4
16
8,500 - 8,999
R-18.4
R-18.4
17
9,000 - 12,999
R-18.4
R-18.4
a. The sum of the value in Table 602.1.1.1(2) and additional insulation layers.
TABLE 1502.1.1.1(2)
flASS ASSEMBLY R -VALUES
ASSEMBLY TYPE
UNGROUTED CELLS,
NOT INSULATED
UNGROUTED CELLS INSULATED
No grout
Vertical cells grouted at
10' o.c. or greater
Vertical cells grouted at
less than 10' o.c.
6" Lightweight concrete block
2.3
5.0
4.5
3.8
6" Medium-weight concrete block
2.1
4.2
3.8
3.2
6" Normal-weight concrete block
1.9
3.3
3.1
2.7
8" Lightweight concrete block
2.6
6.7
5.9
4.8
8" Medium-weight concrete block
2.3
5.3
4.8
4.0
8" Normal-weight concrete block
2.1
4.2
3.8
3.3
12" Lightweight concrete block
2.9
9.1
7.9
6.3
12" Medium- weight concrete block
2.6
7.1
6.4
5.2
12" Normal-weight concrete block
2.3
5.6
5.1
4.3
Brick cavity wall
3.7
6.7
6.2
5.4
Hollow clay brick
2.0
2.7
2.6
2.4
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm.
2003 INTERNATIONAL ENERGY CONSERVATION CODi
47
SIMPLIFIED PRESCRIPTIVE REQUIREMENTS
602.1.2 Ceilings. The required "Ceiling /?-value" in Table
602. 1 assumes standard truss or rafter construction, and
shall apply to all roof/ceiling portions of the building ther-
mal envelope, including cathedral ceilings. Where the con-
struction technique allows the required /?-value of ceiling
insulation to be obtained over the exterior wall top plate,
R-30 shall be permitted to be used where R-38 is required in
the table, and R-38 shall be permitted to be used where R-49
is required.
602.1.2.1 Steel-framed ceiling. The maximum required
(Vfl-factor for cold-formed steel truss roof/ceiling assem-
blies shall be in accordance with Table 602.1.2.1(1) and
compliance shall be determined by using the {/^-factors
in Table 602.1.2.1(2). This table applies to cold-formed
steel truss roof framing spaced at 24 inches (609 mm) on
center and where the penetrations of the truss members
through the cavity insulation do not exceed three pene-
trations for each 4-foot (1220 mm) length of the truss.
The maximum required C/ fi -factor for C-shaped
cold-formed steel roof/ceiling assemblies shall be in ac-
cordance with Table 602.1.2.1(3) and compliance shall
be determined by using the [/^-factors in Table
602.1.2.1(4).
TABLE 602.1 .2.1(1)
MAXIMUM COLD-FORMED STEEL ROOF/CEILING TRUSS
£/„-FACTORS
HEATING DEGREE DAYS
Ufl-FACTOH
0-499
0.0742
500-1,499
0.0504
1,500- 1,999
0.0372
2,000 - 3,999
0.0323
4,000 - 6,499
0.0257
6,500 - 12,999
0.0200
TABLE 602.1 .2.1 (2)
COLD-FORMED STEEL ROOF/CEILING TRUSS U„-FACTORS
CAVITY
INSULATION
B-VAIUE
CONTINUOUS INSULATION BETWEEN DRYWALL
AND BOTTOM CHORD
R-0
R-3
R-5
R-13
0.0865
0.0616
0.0546
R-19
0.0597
0.0467
0.0426
R-26
0.0439
0.0364
0.0338
R-30
0.0382
0.0324
0.0303
R-38
0.0302
0.0265
0.0251
R-49
0.0235
0.0212
0.0203 |
TABLE 602.1.2.1(3)
MAXIMUM C-SHAPED, COLD-FORMED STEEL ROOF/CEILING
HEATING
DEGREE DAYS
tVFACTOR
16 inches o.c.
24 inches o.c.
0-499
0.0773
0.0742
500-1,499
0.0537
0.0519
1,500- 1,999
0.0405
0.0390 J
2,000 - 3,999
0.0355
0.0342
4,000 - 6,499
0.0285
0.0274
6,500 - 12,999
0.0223
0.0215
For SI: 1 inch = 25.4 ram.
TABLE 602.1.2.1(4)
C-SHAPED, COLD-FORMED STEEL ROOF/CEILING £/ R -FACTORS a
FRAMING"
SPACING
R-13
R-19
R-26
R-30
R-38
R-49
2x4
16 inches o.c.
0.1328
0.0530
0.0387
0.0336
0.0265
0.0206
2x6
0.1328
0.0667
0.0456
0.0386
0.0295
0.0223
2x8
0.1328
0.1208
0.0585
0.0475
0.0345
0.0251
2x10
0.1328
0.1208
0.1094
0.1037
0.0398
0.0277
2x 12
0.1328
0.1208
0.1094
0.1037
0.0471
0.0311
2x4
24 inches o.c.
0.1129
0.0510
0.0376
0.0327
0.0260
0.0202
2x6
0.1129
0.0610
0.0428
0.0366
0.0284
0.0216
2x8
0.1129
0.0994
0.0517
0.0429
0.0320
0.0237
2x 10
0.1129
0.0994
0.0873
0.0816
0.0357
0.0257
2x 12
0.1129
0.0994
0.0873
0.0816
0.0403
0.0280
For SI: 1 inch = 25.4 mm.
a. Linear interpolation is permitted for determining (/-factors which are between those given in the table.
b. Applies to steel framing up to a maximum thickness of 0.064 inches (16 gage.)
48
2003 INTERNAT80NAL ENERGY CONSERVATION CODE®
SIMPLIFIED PRESCRIPTIVE REQUIREMENTS
602.1.3 Opaque doors. Opaque doors in the building enve-
lope shall have a maximum [/-factor of 0.35. One opaque
door shall be exempt from this i/-factor requirement.
602.1.4 Floor. The required fl-value in Table 602. 1 shall ap-
ply to all floors.
Exception: Any individual floor assembly with more
than 25 percent of its conditioned floor area exposed di-
rectly to outside air shall meet the R- value requirement in
Table 602.1 for "Ceiling fl-value."
602.1.4.1 Steel-framed ffiloors. The maximum required
[/^factor for C-shaped, cold-formed, steel-framed floors
shall be in accordance with Table 602.1.4.1(1) and com-
pliance shall be determined by using the {/^-factors in Ta-
ble 602.1.4.1(2).
TABLE 602.1.4.1(1)
MAXIMUM C-SHAPED, COLD-FORMED STEEL FLOOR
HEATING
DEGREE DAYS
tVFACTOR
16 inches o.c.
24 inches o.c.
- 2,499
0.0725
0.0708
2,500 - 5,499
0.0477
0.0464
5,500 - 12,999
0.0452
0.0436
For SI: 1 inch = 25.4 mm.
602.1.5 Basement walls. Where the basement is considered
a conditioned space, the basement walls shall be insulated in
accordance with Table 602.1. Where the basement is not
considered a conditioned space, either the basement wall or
the ceiling(s) separating the basement from conditioned
space shall be insulated in accordance with Table 602.1.
Where basement walls are required to be insulated, the re-
quired R- value shall be applied from the top of the basement
wall to a depth of 10 feet (3048 mm) below grade or to the
top of the basement floor, whichever is less.
602.1.6 Slab-on-grade floors. For slabs with a top edge 12
inches (305 mm) or less below finished grade, the required
"Slab perimeter R- value and depth" in Table 602. 1 shall be
applied to the outside of the foundation or the inside of the
foundation wall. The insulation shall extend downward
from the top of the slab or downward from the top of the slab
to the bottom of the slab and then horizontally to the interior
or exterior, until the distance listed in Table 602.1 is
reached.
Where installed between the exterior wall and the edge of
the interior slab, the top edge of the insulation shall be per-
mitted to be cut at a 45-degree (0.79 rad) angle away from
the exterior wall. Insulation extending horizontally outside
of the foundation shall be protected by pavement or by a
minimum of 10 inches (254 mm) of soil.
In locations of 500 HDD or greater, R-2 shall be added to
the "Slab perimeter /J-value" in Table 602.1 where uninsu-
lated hot water pipes, air distribution ducts or electric heat-
ing cables are installed within or under the slab.
Mom: Slab perimeter insulation is not required for
unheated slabs in areas of very heavy termite infestation
probability as shown in Figure 502.2(7). Where this ex-
ception is used, building envelope compliance shall be
demonstrated by using Section 502.2.2 or Chapter 4 with
the actual "Slab perimeter R-value and depth" in Table
602.1, or by using Section 502.2.4.
602.1.7 Crawl space walls. Where the floor above the crawl
space is uninsulated, insulation shall be installed on crawl
space walls when the crawl space is not vented to outside air.
The required "Crawl space wall R- value" in Table 602.1
shall be applied inside of the crawl space wall, downward
from the sill plate to the exterior finished grade level and
then vertically or horizontally or both for 24 inches (610
mm). The exposed earth in all crawl space foundations shall
be covered with a continuous vapor retarder having a maxi-
mum permeance rating of 1 .0 perm (5.7 ■ 10"' ' kg/Pa • s ■ m 2 ),
when tested in accordance with ASTM E 96.
602.1.8 Masonry veneer. For exterior foundation insula-
tion, the horizontal portion of the foundation which sup-
ports a masonry veneer is not required to be insulated.
602.1 J Protection. Exposed insulating materials applied to
the exterior of foundation walls shall have a rigid, opaque
and weather-resistant protective covering. The protective
TABLE 302.1.4.1(2)
C-SHAPED, COLD-FORMED STEEL FLOOR M^-FACTORS 3
FRAMING b
SPACING
R-11
R-13
R-15
R-19
R-21
n-25
R-30
2x6
16 inches o.c.
0.1058
0.1031
0.1005
0.0583
0.0523
NA
NA
2x8
0.1058
0.1031
0.1005
0.0957
0.0935
0.0548
NA
2x10
0.1058
0.1031
0.1005
0.0957
0.0935
0.0894
0.0838
2x 12
0.1058
0.1031
0.1005
0.0957
0.0935
0.0894
0.0838
2x6
24 inches o.c.
0.0941
0.0907
0.0875
0.0538
0.0486
NA
NA
2x8
0.0941
0.0907
0.0875
0.0818
0.0792
0.0488
NA
2x 10
0.0941
0.0907
0.0875
0.0818
0.0792
0.0745
0.0697
2x 12
0.0941
0.0907
0.0875
0.0818
0.0792
0.0745
0.0697
For SI: 1 inch = 25.4 mm.
NA = Not applicable
a. Linear interpolation is permitted for determining {/-factors which are between those given in the table.
b. Applies to steel framing up to a maximum thickness of 0.064 inches (16 gage).
2003 INTERNATIONAL ENERGY CONSERVATION CODE" 1
SIMPLIFIED PRESCRIPTIVE REQUIREMENTS
covering shall extend 6 inches (152 mm) below finished
grade level.
602.1.10 Caulking, sealants and gasketing. All joints,
seams, penetrations (site-built windows, doors and sky-
lights), openings between window and door assemblies and
their respective jambs and framing, and other sources of air
leakage (infiltration and exfiltration) through the building
envelope shall be caulked, gasketed, weatherstripped,
wrapped or otherwise sealed to limit uncontrolled air move-
ment.
602.1.11 Moisture control. Provisions for moisture con-
trol shall be in accordance with Section 502.1.1.
602.1.12 Recessed lighting fixtures. Where provided, re-
cessed lighting fixtures shall be installed in accordance with
Section 502.1.3.
602.2 Maximum solar heat gain coefficient for fenestration
products. In locations with heating degree days (HDD) less
than 3,500, the area-weighted-average solar heat gain coeffi-
cient (SHGC) for glazed fenestration installed in the building
envelope shall not exceed 0.40.
602.3 Fenestration exemption. Up to 1 percent of the total
glazing area shall be exempt from the "Glazing {/-factor" re-
quirement in Table 602.1.
602.4 Replacement fenestration. Where some or all of an ex-
isting fenestration unit is replaced with an entirely new replace-
ment fenestration product, including frame, sash and glazed
portion, the replacement fenestration product shall have a
[/-factor that does not exceed the "Fenestration [/-factor" re-
quirement in Table 502.2.5 applicable to the climate zone
(HDD) where the building is located. The replacement fenes-
tration product(s) must also satisfy the air leakage require-
ments and SHGC of Sections 601.3.2.2 and 602.2,
respectively.
Exception: Replacement skylights shall have a maximum
[/-factor of 0.60 when installed in any location above 1,999
HDD.
to determine the electrical energy consumed by each tenant by
separately metering individual dwelling units.
SECTION 603
MECHANICAL SYSTEMS
603.1 Heating and air-conditioning equipment and appli-
ances. Heating and air-conditioning equipment and appliances
shall comply with the applicable requirements of Section 503 .
SECTION 604
SERVICE WATER HEATING
604.1 Water-heating equipment and appliances. Wa-
ter-heating equipment and appliances shall comply with the ap-
plicable requirements of Section 504.
SECTION 605
ELECTRICAL POWER AND LIGHTING
605.1 Electrical energy consumption. In residential build-
ings having individual dwelling units, provisions shall be made
50
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
PTER7
BUILDING DESIGN F©R ALL COMMERCIAL BUILDING!
701.1 Scope. Commercial buildings shall meet the require-
ments of ASHRAE/IESNA 90. 1 .
Exceptions Commercial buildings that comply with Chap-
ter 8.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
51
52 2003 INTERNATIONAL ENERGY CONSERVATION CODE®
CHAPTER 8
M BY At
;FTJ
801.1 Scope. The requirements contained in this chapter are
applicable to commercial buildings, or portions of commercial
buildings. Buildings constructed in accordance with this chap-
ter are deemed to comply with this code.
801.2 Application., The requirements in Sections 802, 803,
804 and 805 shall each be satisfied on an individual basis.
Where one or more of these sections is not satisfied, compli-
ance for that section(s) shall be demonstrated in accordance
with the applicable provisions of ASHRAE/IESNA 90.1.
Exception: Buildings conforming to Section 806, pro-
vided Sections 802.1.2, 802.3, 803.2.1 or 803.3.1 as ap-
plicable, 803.2.2 or 803.3.2 as applicable, 803.2.3 or
803.3.3 as applicable, 803.2.8 or 803.3.6 as applicable,
803.2.9 or 803.3.7 as applicable, 804, 805.2, 805.3,
805.4, 805.6 and 805.7 are each satisfied.
ECHON 802
?ELOPE BE«
»3TS
802.1 General. Walls, roof assemblies, floors, glazing and
slabs on grade which are part of the building envelope for build-
ings where the window and glazed door area is not greater than
50 percent of the gross area of above-grade walls shall meet the
requirements of Sections 802.2. 1 through 802.2.9, as applica-
ble. Buildings with more glazing shall meet the applicable pro-
visions of ASHRAE/IESNA 90. 1 .
802.1.1 Classification of walls. Walls associated with the
building envelope shall be classified in accordance with
Section 802.1.1.1, 802.1.1.2 or 802.1.1.3.
802.1.1.1 Above-grade walls. Above-grade walls are
those walls covered by Section 802.2.1 on the exterior of
the building and completely above grade or the
above-grade portion of a basement or first-story wall that
is more than 15 percent above grade.
802.1.1.2 Below-girade walls. Below-grade walls cov-
ered by Section 802.2.8 are basement or first-story walls
associated with the exterior of the building that are at
least 85 percent below grade.
802.1.1.3 Interior walls. Interior walls covered by Sec-
tion 802.2.9 are those walls not on the exterior of the
building and that separate conditioned and uncondi-
tioned space.
802.1.2 Moisture control. All framed walls, floors and ceil-
ings not ventilated to allow moisture to escape shall be pro-
vided with an approved vapor retarder having a permeance
rating of 1 perm (5.7 x 10 -" kg/Pa s m 2 ) or less, when
tested in accordance with the dessicant method using Proce-
dure A of ASTM E 96. The vapor retarder shall be installed
on the warm-in- winter side of the insulation.
1. Buildings located in Climate Zones 1 through 7 as
indicated in Table 302. 1 .
2. In construction where moisture or its freezing will
not damage the materials.
3. Where other approved means to avoid condensa-
tion in unventilated framed wall, floor, roof and
ceiling cavities are provided.
802.2 Criteria. The building envelope components shall meet
each of the applicable requirements in Tables 802.2(1),
802.2(2), 802.2(3) and 802.2(4) based on the percentage of
wall that is glazed. The percentage of wall that is glazed shall be
determined by dividing the aggregate area of rough openings
for glazing (windows and glazed doors) in all above-grade
walls associated with the building envelope by the total gross
area of all above-grade exterior walls that are a part of the build-
ing envelope. In buildings with multiple types of building enve-
lope construction, each building envelope construction type
shall be evaluated separately. Where Table 802.2(1), 802.2(2),
802.2(3) or 802.2(4) does not list a particular construction type,
the applicable provisions of ASHRAE/IESNA 90.1 shall be
used in lieu of Section 802.
802.2.1 Above-grade walls. The minimum thermal resis-
tance (R- value) of the insulating material(s) installed in the
wall cavity between the framing members and continuously
on the walls shall be as specified in Table 802.2(1),
802.2(2), 802.2(3) or 802.2(4), based on framing type and
construction materials used in the wall assembly. Where
both cavity and continuous insulation values are provided in
Table 802.2(1), 802.2(2), 802.2(3) or 802.2(4), both re-
quirements shall be met. Concrete masonry units (CMU) at
least 8 inches (203 mm) nominal in thickness with essen-
tially equal amounts of mass on either side of the insulation
layer are considered as having integral insulation; however,
the thermal resistance of that insulation shall not be consid-
ered when determining compliance with Table 802.2(1),
802.2(2), 802.2(3) or 802.2(4). "Other masonry walls" shall
include walls weighing at least 35 pounds per square foot
(170 kg/m 2 ) of wall surface area and do not include CMUs
less than 8 inches (203 mm) nominal in thickness.
802.2.2 Nomgiazed doors. Nonglazed doors shall meet the
applicable requirements for windows and glazed doors and
be considered as part of the gross area of above-grade walls
that are part of the building envelope.
2003 INTERNATIONAL ENERGY CONSERVATION COD1
53
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(1)
BUILDING ENVELOPE REQUIREMENTS 3 lhrou 9 he
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
Slab or below-grade wall (R -value)
Windows and glass doors
PF < 0.25
0.25 < PF < 0.50
PF > 0.50
SHGC
(/■factor
Roof assemblies (/{-value)
All-wood joist/truss
Metal joist/truss
Concrete slab or deck
Metal purlin with thermal block
Metal purlin without thermal block
Insulation between framing
Continuous insulation
Floors over outdoor air or unconditioned
space (if -value)
All-wood joist/truss
Metal joist/truss
Concrete slab or deck
Insulation between framing
Continuous insulation
Above-grade walls (R -value)
Framed
/{-value cavity
/{-value continuous
CMU, > 8 in, with integral insulation
/{-value cavity
/{-value continuous
Other masonry walls
/{-value cavity
/{-value continuous
No framing
Metal framing
Wood framing
NA
NA
NA
NA
For SI: 1 inch = 25.4 mm.
a. Values shall be determined from Tables 802.2(5) through 802.2(37) using the climate zone(s) specified in Table 302. 1 . (Note: The tables begin on page 78.)
b. "NA" indicates the condition is not applicable.
c. An /{-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
54
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(2)
TO ENVELOPE REQUIREMENTS 3 ,hrou9he
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT
BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
Slab or below-grade wall (fi-vatae)
Windows and glass doors
PF < 0.25
0.25 < PF < 0.50
PF > 0.50
SHGC
U-factor
Roof assemblies (/{-value)
All-wood joist/truss
Metal joist/truss
Concrete slab or deck
Metal purlin with thermal block
Metal purlin without thermal block
Insulation between framing
Continuous insulation
Floors over outdoor air or unconditioned
space (S-value)
All-wood joist/truss
Metal joist/truss
Concrete slab or deck
Insulation between framing
Continuous insulation
Above-grade walls (/{-value)
Framed
/{-value cavity
/{-value continuous
CMU, > 8 in, with integral insulation
/{-value cavity
/{-value continuous
Other masonry walls
/{-value cavity
/{-value continuous
No framing
Metal framing
Wood framing
NA
NA
NA
NA
For SI: 1 inch = 25.4 mm.
a. Values shall be determined from Tables 802.2(5) through 802.2(37) using the climate zone(s) specified in Table 302.1. (Note: The tables begin on page 78.)
b. "NA" indicates the condition is not applicable.
c. An S-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE 8
55
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(3)
BUILDING ENVELOPE REQUIREMENTS 3 throg 9 he
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT
BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ((/-factor)
Slab or below-grade wall (i?-vatoe)
Windows and glass doors
PF < 0.25
0.25 < PF < 0.50
PF > 0.50
SHGC
IMactor
Roof assemblies (R-value)
All- wood joist/truss
Metal joist/truss
Concrete slab or deck
Metal purlin with thermal block
Metal purlin without thermal block
insulation between framing
Continuous insulation
Floors over outdoor air or unconditioned
space (R-value)
All-wood joist/truss
Metal joist/truss
Concrete slab or deck
Insulation between framing
Continuous insulation
Above-grade walls (if-value)
Framed
/{-value cavity
/f-value continuous
CMU, > 8 in, with integral insulation
/{-value cavity
/{-value continuous
Other masonry walls
/{-value cavity
/{-value continuous
No framing
Metal framing
Wood framing
NA
NA
NA
NA
For SI: 1 inch = 25.4 mm.
a. Values shall be determined from Tables 802.2(5) through 802.2(37) using the climate zone(s) specified in Table 302.1. (Note: The tables begin on page 78.)
b. "NA" indicates the condition is not applicable.
c. An /f -value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
56
2003 INTERNATIONAL ENERGY CONSERVATION CODE 8
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(4)
BUILDING ENVELOPE REQUIREMENTS 3 ,hrou9he
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT
BUT NOT GREATER THAN THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (I7-factor)
Slab or below-grade wall (i?-vafae)
Windows and glass doors
PF<0.25
0.25 < PF < 0.50
PF > 0.50
SHGC
IWfactor
Roof assemblies (JJ-valee)
All-wood joist/truss
Metal joist/truss
Concrete slab or deck
Metal purlin with thermal block
Metal purlin without thermal block
Insulation between framing
Continuous insulation
Floors over outdoor air or
unconditioned space (J?-valuiie)
All-wood joist/truss
Metal joist/truss
Concrete slab or deck
Insulation between framing
Continuous insulation
Above-grade walls (i?-vatae)
Framed
R- value cavity
/{-value continuous
CMU, > 8 in, with integral insulation
/{-value cavity
/{-value continuous
Other masonry walls
/{-value cavity
/{-value continuous
No framing
Metal framing
Wood framing
NA
NA
NA
NA '
For SI: 1 inch = 25.4 mm.
a. Values shall be determined from Tables 802.2(5) through 802.2(37) using the climate zone(s) specified in Table 302.1. (Note: The tables begin on page 78.)
b. "NA" indicates the condition is not applicable.
c. An /f-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
57
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
802.2.3 Windows and glass doors. The maximum solar
heat gain coefficient (SHGC) and thermal transmittance
([/-factor) of window assemblies and glass doors located in
the building envelope shall be as specified in Table 802.2( 1),
802.2(2), 802.2(3) or 802.2(4), based on the window projec-
tion factor.
The window projection factor shall be determined in ac-
cordance with Equation 8-1.
PF = A/B (Equation 8-1)
where:
PF = Projection factor (decimal).
A = Distance measured horizontally from the furthest
continuous extremity of any overhang, eave, or
permanently attached shading device to the vertical
surface of the glazing.
B = Distance measured vertically from the bottom of
the glazing to the underside of the overhang, eave,
or permanently attached shading device.
Where different windows or glass doors have different
PF values, they shall each be evaluated separately, or an
area-weighted PF value shall be calculated and used for all
windows and glass doors.
802.2.4 Roof assembly. The minimum thermal resistance
(/?- value) of the insulating material installed either between
the roof framing or continuously on the roof assembly shall
be as specified in Table 802.2(1), 802.2(2), 802.2(3) or
802.2(4), based on construction materials used in the roof
assembly.
802.2.5 Skylights. Skylights located in the building enve-
lope shall be limited to 3 percent of the gross roof assembly
area and shall have a maximum thermal transmittance
({/-factor) of the skylight assembly as specified in Table
802.2(1), 802.2(2), 802.2(3) or 802.2(4).
802.2.6 Floors over outdoor air or unconditioned space.
The minimum thermal resistance (/?- value) of the insulating
material installed either between the floor framing or con-
tinuously on the floor assembly shall be as specified in Table
802.2(1), 802.2(2), 802.2(3) or 802.2(4) based on construc-
tion materials used in the floor assembly.
802.2.7 Slabs on grade. The minimum thermal resistance
(R- value) of the insulation around the perimeter of the slab
floor shall be as specified in Table 802.2(1), 802.2(2),
802.2(3) or 802.2(4). The insulation shall be placed on the
outside of the foundation or on the inside of a foundation
wall. The insulation shall extend downward from the top of
the slab for a minimum of 48 inches (1219 mm) or down-
ward to at least the bottom of the slab and then horizontally
to the interior or exterior for a minimum total distance of 48
inches (1219 mm).
802.2.8 Below-grade walls. The minimum thermal resis-
tance (/?-value) of the insulating material installed in, or
continuously on, the below-grade walls shall be as specified
in Table 802.2(1), 802.2(2), 802.2(3) or 802.2(4) and shall
extend to a depth of 1 feet (3048 mm) below the outside fin-
ish ground level, or to the level of the floor, whichever is
less.
802.2.9 Interior walls. The minimum thermal resistance
(R- value) of the insulating material installed in the wall cav-
ity or continuously on the interior walls shall be as specified
in Table 802.2(1) for above-grade walls, regardless of glaz-
ing area, based on framing type and construction materials
used in the wall assembly.
802.3 Air leakage. The requirements for air leakage shall be as
specified in Sections 802.3.1 and 802.3.2.
802.3.1 Window and door assemblies. The air leakage of
window and sliding or swinging door assemblies that are
part of the building envelope shall be determined in accor-
dance with AAMA/WDMA 101/I.S.2 or
101/I.S.2/NAFS-02, or NFRC 400 by an accredited, inde-
pendent laboratory, and labeled and certified by the manu-
facturer and shall not exceed the values in Table 502. 1 .4. 1 .
Exception: Site-constructed windows and doors that are
weatherstripped or sealed in accordance with Section
802.3.3.
8©2.3.2 Curtain wall, storefront glazing and commercial
entrance doors. Curtain wall, storefront glazing and com-
mercial-glazed swinging entrance doors and revolving
doors shall be tested for air leakage at 1.57 pounds per
square foot (psf) (75 Pa) in accordance with ASTM E 283.
For curtain walls and storefront glazing, the maximum air
leakage rate shall be 0.3 cubic feet per minute per square
foot (cfm/ft 2 ) (5.5 m 3 /h ■ m 2 ) of fenestration area. For com-
mercial glazed swinging entrance doors and revolving
doors, the maximum air leakage rate shall be 1.00 cfm/ft 2
(18.3 m 3 /h • m 2 ) of door area when tested in accordance with
ASTM E 283.
802.3.3 Sealing of the building envelope. Openings and
penetrations in the building envelope shall be sealed with
caulking materials or closed with gasketing systems com-
patible with the construction materials and location. Joints
and seams shall be sealed in the same manner or taped or
covered with a moisture vapor-permeable wrapping mate-
rial. Sealing materials spanning joints between construction
materials shall allow for expansion and contraction of the
construction materials.
802.3.4 Dampers integral to the building envelope. Stair,
elevator shaft vents, and other dampers integral to the build-
ing envelope shall be equipped with motorized dampers
with a maximum leakage rate of 3 cfm/ft 2 [5.1 L/s ■ m 2 ] at
1.0 inch water gauge (w.g.) (250 Pa) when tested in accor-
dance with AMCA 500.
Exception: Gravity (nonmotorized) dampers are permit-
ted to be used in buildings less than three stories in height
above grade.
802.3.5 Loading dock weatherseals. Cargo doors and
loading dock doors shall be equipped with weatherseals to
restrict infiltration when vehicles are parked in the doorway.
58
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
8023.6 Vestibules. A door that separates conditioned space
from the exterior shall be protected with an enclosed vesti-
bule, with all doors opening into and out of the vestibule
equipped with self-closing devices. Vestibules shall be de-
signed so that in passing through the vestibule it is not neces-
sary for the interior and exterior doors to open at the same time.
Exceptions:
1. Buildings in Climate Zones la through 4b as indi-
cated in Table 302. 1 .
2. Doors not intended to be used as a building en-
trance door, such as doors to mechanical or electri-
cal equipment rooms.
3 . Doors opening directly from a guestroom or dwell-
ing unit.
4. Doors that open directly from a space less than
3,000 square feet (298 m 2 ) in area.
5. Revolving doors.
6. Doors used primarily to facilitate vehicular move-
ment or material handling and adjacent personnel
doors.
802.3.7 Recessed lighting fixtures. When installed in the
building envelope, recessed lighting fixtures shall meet one
of the following requirements:
1 . Type IC rated, manufactured with no penetrations be-
tween the inside of the recessed fixture and ceiling
cavity and sealed or gasketed to prevent air leakage
into the unconditioned space.
2. Type IC or non-IC rated, installed inside a sealed box
constructed from a minimum 0.5 -inch-thick (12.7
mm) gypsum wallboard or constructed from a pre-
formed polymeric vapor barrier, or other air-tight as-
sembly manufactured for this purpose, while
maintaining required clearances of not less than 0.5
inch (12.7 mm) from combustible material and not
less than 3 inches (76 mm) from insulation material.
3. Type IC rated, in accordance with ASTM E 283 ad-
mitting no more than 2.0 cubic feet per minute (cfm)
(0.944 L/s) of air movement from the conditioned
space to the ceiling cavity. The lighting fixture shall
be tested at 1.57 psf (75 Pa) pressure difference and
shall be labeled.
SECTION 803
IMG MECHANICAL SYSTEMS
803.1 General. This section covers the design and construction
of mechanical systems and equipment serving the building
heating, cooling or ventilating needs.
803.1.1 Compliance. Compliance with Section 803 shall be
achieved by meeting either Section 803.2 or 803.3.
803.2 Simple HVAC systems and equaipraieimt. This section
applies to buildings served by unitary or packaged HVAC
equipment listed in Tables 803.2.2(1) through 803.2.2(5), each
serving one zone and controlled by a single thermostat in the
zone served. It also applies to two-pipe heating systems serving
one or more zones, where no cooling system is installed.
This section does not apply to fan systems serving multiple
zones, nonunitary or nonpackaged HVAC equipment and sys-
tems or hydronic or steam heating and hydronic cooling equip-
ment and distribution systems that provide cooling or cooling
and heating which are covered by Section 803.3.
103.2.1 Calculation of heating and cooling
Design loads shall be determined in accordance with the
procedures described in the ASHRAE Fundamentals
Handbook. Heating and cooling loads shall be adjusted to
account for load reductions that are achieved when energy
recovery systems are utilized in the HVAC system in accor-
dance with the ASHRAE HVAC Systems and Equipment
Handbook. Alternatively, design loads shall be determined
by an approved equivalent computation procedure, using
the design parameters specified in Chapter 3.
803.2.1.1 Equipment amid system sizing. Heating and
cooling equipment and systems capacity shall not exceed
the loads calculated in accordance with Section 803.2.1.
A single piece of equipment providing both heating and
cooling must satisfy this provision for one function with
the capacity for the other function as small as possible,
within available equipment options.
Equipment shall meet the minimum efficiency require-
ments of Tables 803.2.2(1), 803.2.2(2), 803.2.2(3),
803.2.2(4) and 803.2.2(5), when tested and rated in accor-
dance with the applicable test procedure. The efficiency
shall be verified through data furnished by the manufacturer
or through certification under an approved certification pro-
gram. Where multiple rating conditions or performance re-
quirements are provided, the equipment shall satisfy all
stated requirements.
ture and humidity controls. Require-
ments for temperature and humidity controls shall be as
specified in Sections 803.2.3.1 and 803.2.3.2.
803.2.3.1 Temperature controls. Each heating and
cooling system shall have at least one solid-state pro-
grammable thermostat. The thermostat shall have the ca-
pability to set back or shut down the system based on day
of the week and time of day, and provide a readily acces-
sible manual override that will return to the presetback or
shutdown schedule without reprogramming.
1. HVAC systems serving hotel/motel
guestrooms.
2. Packaged terminal air conditioners, packaged
terminal heat pumps and room air conditioner
systems.
803.2.3.2 Heat pump smpplemeimtary heat. Heat
pumps having supplementary electric-resistance heat
shall have controls that, except during defrost, prevent
supplemental heat operation when the heat pump can
meet the heating load.
803.2.3.3 Humidity controls. When humidistats are in-
stalled, they shall have the capability to prevent the use of D
fossil fuel or electric power to achieve a humidity below
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
59
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
60 percent when the system controlled is cooling, and
above 30 percent when the system controlled is heating.
Exceptions:
1. Systems serving spaces where specific humid-
ity levels are required to satisfy process needs,
such as computer rooms, museums, surgical
suites and buildings with refrigerating systems,
such as supermarkets, refrigerated warehouses
and ice arenas.
2. Systems where humidity is removed as the re-
sult of the use of a desiccant system with energy
recovery.
3. Reheat systems utilizing site-recovered (in-
cluding condenser heat) or site-solar energy
sources.
803.2.4 Hydronic system controls. Hydronic systems of at
least 600,000 British thermal units per hour (Btu/h) (175
860 W) design capacity supplying heated water to comfort
conditioning systems shall include controls that meet the re-
quirements of Section 803.3.3.7.
803.2.5 Ventilation. Ventilation, either natural or mechani-
cal, shall be provided in accordance with Chapter4 of the In-
ternational Mechanical Code. Where mechanical
ventilation is provided, the system shall provide the capabil-
ity to reduce the outdoor air supply to the minimum required
by Chapter 4 of the International Mechanical Code.
803.2.6 Cooling with outdoor air. Each system with a cool-
ing capacity greater than 65,000 Btu/h (19 kW) located in
other than Climate Zones 1 , 2, 3b, 5a or 6b as shown in Table
302.1 shall have an economizer that will automatically shut
off the cooling system and allow all of the supply air to be
provided directly from outdoors.
Economizers shall be capable of operating at 100-percent
outside air, even if additional mechanical cooling is required
to meet the cooling load of the building. Where a single
room or space is supplied by multiple air systems, the aggre-
gate capacity of those systems shall be used in applying this
requirement.
Exceptions:
1. Where the cooling equipment is covered by the
minimum efficiency requirements of Table
803.2.2(1) or 803.2.2(2) and meets the efficiency
requirements of Table 803.2.6.
2. Systems with air or evaporatively cooled
condensors and which serve spaces with open case
refrigeration or that require filtration equipment in
order to meet the minimum ventilation require-
ments of Chapter 4 of the International Mechani-
cal Code.
3. Systems with a cooling capacity less than 135,000
Btu/h (40 kW) in Climate Zones 3c, 5b, 7, 1 3b, and
14.
TABLE 803.2.2(1)
UNITARY AIR CONDITIONERS AND CONDENSING UNITS, ELECTRICALLY OPERATED,
MINIMUM EFFICIENCY REQUIREMENTS
EQUIPMENT TYPE
SIZE CATEGORY
SUBCATEGORY OR
RATING CONDITION
MINIMUM
EFFICIENCY b
TEST PROCEDURE 3
Air conditioners,
Air cooled
< 65,000 Btu/h d
Split system
10.0 SEER
ARI 210/240
Single package
9.7 SEER
> 65,000 Btu/h and
< 135,000 Btu/h
Split system and
single package
10.3 EER C
> 135,000 Btu/h and
< 240,000 Btu/h
Split system and
single package
9.7 EER C
ARI 340/360
> 240,000 Btu/h and
< 760,000 Btu/h
Split system and
single package
9.5 EER C
9.7 IPLV C
> 760,000 Btu/h
Split system and
single package
9.2 EER C
9.4 IPLV C
Air conditioners, Water and
evaporatively cooled
< 65,000 Btu/h
Split system and
single package
12.1 EER
ARI 210/240
> 65,000 Btu/h and
< 135,000 Btu/h
Split system and
single package
11.5EER
> 135,000 Btu/h and
< 240,000 Btu/h
Split system and
single package
11.0EER C
ARI 340/360
> 240,000 Btu/h
Split system and
single package
11.0EER
10.3 IPLV C
For SI: 1 British thermal unit per hour = 0.293 1 W.
a. Chapter 10 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.
b. IPLVs are only applicable to equipment with capacity modulation.
c. Deduct 0.2 from the required EERs and IPLVs for units with a heating section other than electric resistance heat.
d. Single-phase air-cooled air conditioners < 65,000 Btu/h are regulated by the National Appliance Energy Conservation Act of 1987 (NAECA). SEER values are
those set by NAECA.
SO
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 803.2.2(2)
UNITARY AND APPLIED HEAT PUMPS, ELECTRICALLY OPERATED,
MINIMUM EFFICIENCY REQUIREMENTS
EQUIPMENT TYPE
SEE CATEGORY
SUBCATEGORY OR
RATING CONDITION
MINIMUM
efficiency"
TEST PROCEDURE 3
Air cooled (Cooling mode)
< 65,000 Btu/h d
Split system
10.0 SEER
ARI 210/240
Single package
9.7 SEER
> 65,000 Btu/h and
< 135,000 Btu/h
Split system and
single package
10.1 EER C
> 135,000 Btu/h and
< 240,000 Btu/h
Split system and
single package
9.3 EER C
ARI 340/360
> 240,000 Btu/h
Split system and
single package
9.0 EER C
9.2 IPLV C
Water source
(Cooling mode)
< 17,000 Btu/h
86°F entering water
11.2 EER
ARI/ASHRAE- 13256-1
> 17,000 Btu/h and
< 135,000 Btu/h
86°F entering water
12.0 EER
ARI/ASHRAE- 13256-1
Groundwater source
(Cooling mode)
< 135,000 Btu/h
59°F entering water
16.2 EER
ARI/ASHRAE- 13256-1
Ground source
(Cooling mode)
< 135,000 Btu/h
77°F entering water
13.4 EER
ARI/ASHRAE- 13256-1
Air cooled
(Heating mode)
< 65,000 Btu/h d
(Cooling capacity)
Split system
6.8 HSPF
ARI 210/240
Single package
6.6 HSPF
> 65,000 Btu/h and
< 135,000 Btu/h
(Cooling capacity)
47°Fdb/43°Fwb
outdoor air
3.2 COP
> 135,000 Btu/h
(Cooling capacity)
47°F db/43°F wb
outdoor air
3.1 COP
ARI 340/360
Water source
(Heating mode)
< 135,000 Btu/h
(Cooling capacity)
68°F entering water
4.2 COP
ARI/ASHRAE- 13256-1
Groundwater source
(Heating mode)
< 135,000 Btu/h
(Cooling capacity)
50°F entering water
3.6 COP
ARI/ASHRAE- 13256-1
Ground source
(Heating mode)
< 135,000 Btu/h
(Cooling capacity)
32°F entering water
3.1 COP
ARI/ASHRAE- 13256-1
For SI: °C = [(°F) - 32] / 1.8, IBritish thermal unit per hour = 0.2931W.
db = dry-bulb temperature, °F
wb = wet-bulb temperature, °F
a. Chapter 10 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.
b. IPLVs and Part load rating conditions are only applicable to equipment with capacity modulation.
c. Deduct 0.2 from the required EERs and IPLVs for units with a heating section other than electric resistance heat.
d. Single-phase air-cooled heat pumps < 65,000 Btu/h are regulated by the National Appliance Energy Conservation Act of 1987 (NAECA). SEER and HSPF values
are those set by NAECA.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
61
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 803.2.2(3)
PACKAGED TERMINAL AIR CONDITIONERS AND PACKAGED TERMINAL HEAT PUMPS
EQUIPMENT TYPE
SIZE CATEGORY (INPUT)
SUBCATEGORY OR
RATING CONDITION
MINIMUM
efficiency"
TEST PROCEDURE 3
PTAC (Cooling mode)
New construction
All capacities
95°F db outdoor air
12.5 - (0.213 • Cap/1000) EER
ARI 310/380
PTAC (Cooling mode)
Replacements
All capacities
95°F db outdoor air
10.9 - (0.213 • Cap/1000) EER
PTHP (Cooling mode)
New construction
All capacities
95°F db outdoor air
12.3 - (0.213 • Cap/1000) EER
PTHP (Cooling mode)
Replacements
All capacities
95°F db outdoor air
10.8 -(0.213 Cap/1000) EER
PTHP (Heating mode)
New construction
All capacities
—
3.2 - (0.026 ■ Cap/1000) COP
PTHP (Heating mode)
Replacements
All capacities
—
2.9 - (0.026 • Cap/1000) COP
For SI: °C = [(°F) - 32] / 1.8, 1 British thermal unit per hour = 0.2931W.
db = dry-bulb temperature, °F
wb = wet-bulb temperature, °F
a. Chapter 10 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.
b. Cap means the rated cooling capacity of the product in Btu/h. If the unit's capacity is less than 7,000 Btu/h, use 7,000 Btu/h in the calculation. If the unit's capacity
is greater than 15,000 Btu/h, use 15,000 Btu/h in the calculation.
c. Replacement units must be factory labeled as follows: "MANUFACTURED FOR REPLACEMENT APPLICATIONS ONLY; NOT TO BE INSTALLED IN
NEW CONSTRUCTION PROJECTS." Replacement efficiencies apply only to units with existing sleeves less than 16 inches (406 mm) high and less than 42
inches (1067 mm) wide.
TABLE 803.2.2(4)
WARM AIR FURNACES AND COMBINATION WARM AIR FURNACES/AIR-CONDITIONING UNITS,
WARM AIR DUCT FURNACES AND UNIT HEATERS, MINIMUM EFFICIENCY REQUIREMENTS
EQUIPMENT TYPE
SIZE CATEGORY (INPUT)
SUBCATEGORY OR
RATING CONDITION
MINIMUM
EFFICIENCY d ' e
TEST PROCEDURE 9
Warm air furnaces, gas fired
< 225,000 Btu/h
—
78% AFUE
or
80% Ef
DOE 10 CFR
Part 430 or
ANSI Z2 1.47
> 225,000 Btu/h
Maximum capacity
80% Ef
ANSI Z2 1.47
Warm air furnaces, oil fired
< 225,000 Btu/h
—
78% AFUE
or
80% Ef
DOE 10 CFR
Part 430 or
UL727
> 225,000 Btu/h
Maximum capacity b
81% £«
UL727
Warm air duct furnaces,
gas fired
All capacities
Maximum capacity 13
80% E c
ANSI Z83.9
Warm air unit heaters,
gas fired
All capacities
Maximum capacity 0.
80% E c
ANSI Z83.8
Warm air unit heaters,
oil fired
All capacities
Maximum capacity 0.
80% E c
UL731
For SI: 1 British thermal unit per hour = 0.293 1W.
a. Chapter 10 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.
b. Minimum and maximum ratings as provided for and allowed by the unit's controls.
c. Combination units not covered by the National Appliance Energy Conservation Act of 1987 (NAEC A) (3-phase power or cooling capacity greater than or equal to
65,000 Btu/h [19 kW]) shall comply with either rating.
d. E, = Thermal efficiency. See test procedure for detailed discussion.
e. E c = Combustion efficiency (100% less flue losses). See test procedure for detailed discussion.
f. E c = Combustion efficiency. Units must also include an IID, have jacket losses not exceeding 0.75 percent of the input rating, and have either power venting or a
flue damper. A vent damper is an acceptable alternative to a flue damper for those furnaces where combustion air is drawn from the conditioned space.
g. £, = Thermal efficiency. Units must also include an IID, have jacket losses not exceeding 0.75 percent of the input raUng, and have either power venting or a flue
damper. A vent damper is an acceptable alternative to a flue damper for those furnaces where combustion air is drawn from the conditioned space.
62
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 803.2.2(5)
BOILERS, GAS- AND OIL-FIRED, MINIMUM EFFICIENCY REQUIREMENTS
EQUIPMENT TYPE*
SIZE CATEGORY
(INPUT)
SUBCATEGORY OR RATING
CONDITION
MINIMUM
EFFICIENCY ' d ' e
TEST PROCEDURE 8
Boilers, Gas fired
< 300,000 Btu/h
Hot water
80% AFUE
DOE 10 CFR
Part 430
Steam
75% AFUE
> 300,000 Btu/h and
< 2,500,000 Btu/h
Minimum capacity b
75% E,
H.I. HBS 86
> 2,500,000 Btu/h f
Hot water
80% E c
Steam
80% E c
Boilers, Oil fired
< 300,000 Btu/h
—
80% AFUE
DOE 10 CFR
Part 430
> 300,000 Btu/h and
< 2,500,000 Btu/h
Minimum capacity b
78% E,
H.I. HBS 86
> 2,500,000 Btu/h f
Hot water
83% E c
Steam
83% E c
Boilers, Oil fired (Residual)
> 300,000 Btu/h and
< 2,500,000 Btu/h
Minimum capacity 6
78% E,
H.I. HBS 86
> 2,500,000 Btu/h f
Hot water
83% E c
Steam
83% E c
For SI: 1 British thermal unit per hour = 0.293 1W.
a. Chapter 10 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.
b. Minimum ratings as provided for and allowed by the unit's controls.
c. E c = Combustion efficiency (100 percent less flue losses). See reference document for detailed information.
d. £, = Thermal efficiency. See reference document for detailed information.
e. Alternative test procedures used at the manufacturer's option are ASME PTC-4.1 for units greater than 5,000,000 Btu/h input, or ANSI Z21.13 for units greater
than or equal to 300,000 Btu/h and less than or equal to 2,500,000 Btu/h input.
f. These requirements apply to boilers with rated input of 8,000,000 Btu/h or less that are not packaged boilers, and to all packaged boilers. Minimum efficiency re-
quirements for boilers cover all capacities of packaged boilers.
MINIMUM EQUIPft
TABLE 803.2.6
ENT EFFICIENCY ECONOMIZER EXCEPTION
TOTAL COOLING CAPACITY OF
EQUIPMENT
BUILDING LOCATION
Zones 6a, 9a, 10a, 11a, 12a, 12b, 13a,
13b, 14a, 14b, 15-19
Zones 3a, 3b, 4a, 7a, 8, 9b, 1 0b, 1 1 b
Zones 4b, 5a, 5b, 6b, 7b
90,000 Btu/h to 134,999 Btu/h
Not Applicable
11.4EER
10.4 EER
135,000 Btu/h to 759,999 Btu/h
Not Applicable
10.9 EER
9.9 EER
760,000 Btu/h or more
Not Applicable
10.5 EER
9.6 EER
For SI: °C = [(°F)-32]/l .8,1 British thermal unit per hour = 0.293 1 W.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
63
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
803.2.7 Shutoff dampers. Outdoor air supply and exhaust
ducts shall be provided with automatic means to reduce and
shut off airflow.
Exceptions:
1 . Systems serving areas designed for continuous op-
eration.
2. Individual systems with a maximum 3,000 cfm
(1416 L/s) airflow rate.
3. Systems with readily accessible manual dampers.
4. Where restricted by health and life safety codes.
803.2.8 Duct and plenum insulation and sealing. All sup-
ply and return air ducts and plenums shall be insulated with
a minimum of R-5 insulation when located in unconditioned
spaces and with a minimum of R-8 insulation when located
outside the building. When located within a building enve-
lope assembly, the duct or plenum shall be separated from
the building exterior or unconditioned or exempt spaces by a
minimum of R-8 insulation.
Exceptions:
1 . When located within equipment.
2. When the design temperature difference between
the interior and exterior of the duct or plenum does
not exceed 15°F (8°C).
All joints, longitudinal and transverse seams and connec-
tions in ductwork, shall be securely fastened and sealed with
welds, gaskets, mastics (adhesives), mastic-plus-embed-
ded-fabric systems, or tapes. Tapes and mastics used to seal
ductwork shall be listed and labeled in accordance with UL
1 8 1 A or UL 1 8 1 B . Duct connections to flanges of air distri-
bution system equipment shall be sealed and mechanically
fastened. Unlisted duct tape is not permitted as a sealant on
any metal ducts.
803.2.8.1 Duct construction. Ductwork shall be con-
structed and erected in accordance with the International
Mechanical Code.
803.2.8.1.1 High- and medium-pressure duct sys-
tems. All ducts and plenums operating at a static pres-
sures greater than 2 inches w.g. (500 Pa) shall be
insulated and sealed in accordance with Section
803.2.8. Ducts operating at a static pressures in excess
of 3 inches w.g. (750 Pa) shall be leak tested in accor-
dance with Section 803.3.6. Pressure classifications
specific to the duct system shall be clearly indicated
on the construction documents in accordance with the
International Mechanical Code.
803.2.8.1.2 Low-pressure duct systems. All longitu-
dinal and transverse joints, seams and connections of
supply and return ducts operating at a static pressure
less than or equal to 2 inches w.g. (500 Pa) shall be se-
curely fastened and sealed with welds, gaskets,
mastics (adhesives), mastic-plus-embedded-fabric
systems or tapes installed in accordance with the man-
ufacturer's installation instructions. Pressure classifi-
cations specific to the duct system shall be clearly
indicated on the construction documents in accor-
dance with the International Mechanical Code.
Exception: Continuously welded and lock-
ing-type longitudinal joints and seams on ducts op-
erating at static pressures less than 2 inches w.g.
(500 Pa) pressure classification.
'.2.9 Piping insulation. All piping serving as part of a
heating or cooling system shall be thermally insulated in ac-
cordance with Section 803.3.7.
803.3 Complex HVAC systems and equipment. This section
applies to buildings served by HVAC equipment and systems
not covered in Section 803.2.
803.3.1 Calculation of heating and cooling loads. Design
loads shall be determined in accordance with Section
803.2.1.
803.3.1.1 Equipment and system sizing. Heating and
cooling equipment and system capacity shall not exceed
the loads calculated in accordance with Section 803 .2. 1 .
Exceptions:
1. Required standby equipment and systems pro-
vided with controls and devices that allow such
systems or equipment to operate automatically
only when the primary equipment is not operat-
ing.
2. Multiple units of the same equipment type with
combined capacities exceeding the design load
and provided with controls that have the capa-
bility to sequence the operation of each unit
based on load.
803.3.2 HVAC equipment performance requirements.
Equipment shall meet the minimum efficiency requirements
of Tables 803.3.2(1) through 803.3.2(6) and Table
803.2.2(5), when tested and rated in accordance with the ap-
plicable test procedure. The efficiency shall be verified
through certification under an approved certification pro-
gram or, if no certification program exists, the equipment ef-
ficiency ratings shall be supported by data furnished by the
manufacturer. Where multiple rating conditions or perfor-
mance requirements are provided, the equipment shall sat-
isfy all stated requirements. Where components, such as
indoor or outdoor coils, from different manufacturers are
used, calculations and supporting data shall be furnished by
the designer that demonstrate that the combined efficiency
of the specified components meets the requirements herein.
Where unitary or prepackaged equipment is used in a
complex HVAC system and is not covered by Section
803.3.2, the equipment shall meet the applicable require-
ments of Section 803.2.2.
Exception: Equipment listed in Table 803.3.2(2) not de-
signed for operation at ARI Standard test conditions of |
44°F (7°C) leaving chilled water temperature and 85°F
(29°C) entering condenser water temperature shall have
a minimum full load COP and IPLV rating as shown in
Tables 803.3.2(3) through 803.3.2(5) as applicable. The
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
table values are only applicable over the following full
load design ranges:
Leaving Chilled
Water Temperature: 40 to 48°F (4 to 9°C)
Entering Condenser
Water Temperature: 75 to 85°F (24 to 29°C)
TABLE 803.3.2(1)
CONDENSING UNITS, ELECTRICALLY OPERATED, MIN
Condensing Water
Temperature Rise: 5 to 15°F (A3 to A8°C )
Chillers designed to operate outside of these ranges are
not covered by this code.
/IUM EFFICIENCY REQUIREMENTS
EQUIPMENT TYPE
SIZE CATEGORY
MINIMUM
EFFICIENCY"
TEST PROCEDURE 3
Condensing units,
Air cooled
> 135,000 Btu/h
10.1 EER
11.2 IPLV
ARI365
Condensing units,
Water or evaporatively cooled
> 135,000 Btu/h
13.1 EER
13.1 IPLV
For SI: 1 British thermal unit per hour = 0.2931 W.
a. Chapter 10 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.
b. IPLVs are only applicable to equipment with capacity modulation.
'ER
TABLE 803.3.2(2)
PACKAGES, MINIMUM EFFICIENCY REQUIREMENTS
EQUIPMENT TYPE
SIZE CATEGORY
MINIMUM
EFFICIENCY"
TEST PROCEDURE 3
Air cooled, with condenser,
Electrically operated
< 150 tons
2.80 COP
2.80 IPLV
ARI 550/590
> 150 tons
2.50 COP
2.50 IPLV
Air cooled,
without condenser,
Electrically operated
All capacities
3.10 COP
3.10 IPLV
ARI 550/590
Water cooled, Electrically operated, Positive displacement
(reciprocating)
All capacities
4.20 COP
4.65 IPLV
Water cooled,
Electrically operated,
Positive displacement
(rotary screw and scroll)
< 150 tons
4.45 COP
4.50 IPLV
ARI 550/590
> 150 tons and
< 300 tons
4.90 COP
4.95 IPLV
> 300 tons
5.50 COP
5.60 IPLV
Water cooled,
Electrically operated,
centrifugal
< 150 tons
5.00 COP
5.00 IPLV
ARI 550/590
> 150 tons and
< 300 tons
5.55 COP
5.55 IPLV
> 300 tons
6.10 COP
6.10 IPLV
Air cooled, absorption
single effect
All capacities
0.60 COP
ARI 560
Water cooled, absorption
single effect
All capacities
0.70 COP
Absorption double effect,
indirect-fired
All capacities
1.00 COP
1.05 IPLV
Absorption double effect,
direct-fired
All capacities
1.00 COP
1.00 IPLV
For SI: 1 ton = 3.517 kW, °C = [(°F) - 32] / 1.8.
a. Chapter 10 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.
b. The chiller equipment requirements do not apply for chillers used in low temperature applications where the design leaving fluid temperature is less than or equal
to 40°F.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 803.3.2(3)
COPS AND IPLVS FOR NONSTANDARD CENTRIFUGAL CHILLERS < 150 TONS
CENTRIFUGAL CHILLERS < 1 50 TONS
COP std = 5.4
Leaving chilled water
temperature (°F)
Entering condenser water
temperature (°F)
Lift 3 (°F)
Condenser flow rate
2 gpm/ton
2.5 gpm/ton
3 gpm/ton
4 gpm/ton
5 gpm/ton
6 gpm/ton
Required COP and IPLV
46
75
29
6.00
6.27
6.48
6.80
7.03
7.20
45
75
30
5.92
6.17
6.37
6.66
6.87
7.02
44
75
31
5.84
6.08
6.26
6.53
6.71
6.86
43
75
32
5.75
5.99
6.16
6.40
6.58
6.71
42
75
33
5.67
5.90
6.06
6.29
6.45
6.57
41
75
34
5.59
5.82
5.98
6.19
6.34
6.44
46
80
34
5.59
5.82
5.98
6.19
6.34
6.44
40
75
35
5.50
5.74
5.89
6.10
6.23
6.33
45
80
35
5.50
5.74
5.89
6.10
6.23
6.33
44
80
36
5.41
5.66
5.81
6.01
6.13
6.22
43
80
37
5.31
5.57
5.73
5.92
6.04
6.13
42
80
38
5.21
5.48
5.64
5.84
5.95
6.04
41
80
39
5.09
5.39
5.56
5.76
5.87
5.95
46
85
39
5.09
5.39
5.56
5.76
5.87
5.95
40
80
40
4.96
5.29
5.47
5.67
5.79
5.86
45
85
40
4.96
5.29
5.47
5.67
5.79
5.86
44
85
41
4.83
5.18
5.40
5.59
5.71
5.78
43
85
42
4.68
5.07
5.28
5.50
5.62
5.70
42
85
43
4.51
4.94
5.17
5.41
5.54
5.62
41
85
44
4.33
4.80
5.05
5.31
5.45
5.53
40
85
45
4.13
4.65
4.92
5.21
5.35
5.44
Condenser AT b
14.04
11.23
9.36
7.02
5.62
4.68
For SI: °C = [(°F) - 32] / 1.8, 1 gallon per minute = 3.785 L/min., 1 ton = 12,000 British thermal unit per hour = 3.517 kW.
a. Lift = Entering condenser water temperature (°F) - Leaving chilled water temperature (°F).
b. Condenser AT = Leaving condenser water temperature (°F) - Entering condenser water temperature (°F).
K adj = 6.1507 - 0.30244(X) + 0.0062692(X) 2 - 0.000045595(X)
where: X = Condenser AT + Lift
C0P o , ; =K „xC0P s[d
66
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
COPs
TABLE 803.3.2(4)
AND 1PLVS FOR NONSTANDARD CENTRIFUGAL CHILLERS
> 150 TONS, < 300 TONS
CENTRIFUGAL CHILLERS > 150 Tons, < 300 Tons
COP std = 5.55
Leaving chilled water
temperature (°F)
Entering condenser water
temperature (°F)
Lift 3 (°F)
Condenser flow rate
2 gpm/ton
2.5 gpm/ton
3 gpm/ton
4 gpm/ton
5 gpm/ton
6 gpm/ton
Required COP and IPLV
46
75
29
6.17
6.44
6.66
6.99
7.23
7.40
45
75
30
6.08
6.34
6.54
6.84
7.06
7.22
44
75
31
6.00
6.24
6.43
6.71
6.90
7.05
43
75
32
5.91
6.15
6.33
6.58
6.76
6.89
42
75
33
5.83
6.07
6.23
6.47
6.63
6.75
41
75
34
5.74
5.98
6.14
6.36
6.51
6.62
46
80
34
5.74
5.98
6.14
6.36
6.51
6.62
40
75
35
5.65
5.90
6.05
6.26
6.40
6.51
45
80
35
5.65
5.90
6.05
6.26
6.40
6.51
44
80
36
5.56
5.81
5.97
6.17
6.30
6.40
43
80
37
5.46
5.73
5.89
6.08
6.21
6.30
42
80
38
5.35
5.64
5.80
6.00
6.12
6.20
41
80
39
5.23
5.54
5.71
5.91
6.03
6.11
46
85
39
5.23
5.54
5.71
5.91
6.03
6.11
40
80
40
5.10
5.44
5.62
5.83
5.95
6.03
45
85
40
5.10
5.44
5.62
5.83
5.95
6.03
44
85
41
4.96
5.33
5.55
5.74
5.86
5.94
43
85
42
4.81
5.21
5.42
5.66
5.78
5.86
42
85
43
4.63
5.08
5.31
5.56
5.69
5.77
41
85
44
4.45
4.93
5.19
5.46
5.60
5.69
40
85
45
4.24
4.77
5.06
5.35
5.50
5.59
Condemseir AT b
14.04
11.23
9.36
7.02
5.62
4.68
For SI: °C = [(°F) - 32] / 1.8, 1 gallon per minute = 3.785 L/min., 1 ton = 12,000 British thermal unit
a. Lift = Entering condenser water temperature (°F) - Leaving chilled water temperature (°F).
b. Condenser AT = Leaving condenser water temperature (°F) - Entering condenser water temperature
K adj = 6.1507 - 0.30244(X) + 0.0062692(X) 2 - 0.000045595(X)
where: X = Condenser AT + Lift
COP^=K^xCOP s , d
per hour = 3.51 7 kW.
(°F).
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
67
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 803.3.2(5)
COPS AND IPLVS FOR NONSTANDARD CENTRIFUGAL CHILLERS > 300 TONS
CENTRIFUGAL CHILLERS > 300 TONS
COP sld = 6.1
Condenser Flow Rate
2
gpm/ton
2.5
gpm/ton
3 gpm/ton
4 gpm/ton
5 gpm/ton
6 gpm/ton
Leaving chilled water
temperature (°F)
Entering Condenser
Water Temperature (°F)
Lift 3
(°F)
Required COP and IPLV
46
75
29
6.80
7.11
7.35
7.71
7.97
8.16
45
75
30
6.71
6.99
7.21
7.55
7.78
7.96
44
75
31
6.61
6.89
7.09
7.40
7.61
7.77
43
75
32
6.52
6.79
6.98
7.26
7.45
7.60
42
75
33
6.43
6.69
6.87
7.13
7.31
7.44
41
75
34
6.33
6.60
6.77
7.02
7.18
7.30
46
80
34
6.33
6.60
6.77
7.02
7.18
7.30
40
75
35
6.23
6.50
6.68
6.91
7.06
7.17
45
80
35
6.23
6.50
6.68
6.91
7.06
7.17
44
80
36
6.13
6.41
6.58
6.81
6.95
7.05
43
80
37
6.02
6.31
6.49
6.71
6.85
6.94
42
80
38
5.90
6.21
6.40
6.61
6.75
6.84
41
80
39
5.77
6.11
6.30
6.52
6.65
6.74
46
85
39
5.77
6.11
6.30
6.52
6.65
6.74
40
80
40
5.63
6.00
6.20
6.43
6.56
6.65
45
85
40
5.63
6.00
6.20
6.43
6.56
6.65
44
85
41
5.47
5.87
6.10
6.33
6.47
6.55
43
85
42
5.30
5.74
5.98
6.24
6.37
6.46
42
85
43
5.11
5.60
5.86
6.13
6.28
6.37
41
85
44
4.90
5.44
5.72
6.02
6.17
6.27
40
85
45
4.68
5.26
5.58
5.90
6.07
6.17
Condenser AT b
14.04
11.23
9.36
7.02
5.62
4.68
For SI: °C = [(°F) - 32] / 1.8, 1 gallon per minute = 3.785 L/min., 1 ton = 12,000 British thermal unit
a. Lift = Entering condenser water temperature (°F) - Leaving chilled water temperature (°F).
b. Condenser AT = Leaving condenser water temperature ( D F) - Entering condenser water temperature
K adj = 6.1507 - 0.30244(X) + 0.0062692(X) 2 - 0.000045595(X)
where: X = Condenser AT + Lift
COP^ = K^xCOP sld
per hour = 3.517 kW.
(°F).
68
2003 INTERNATIONAL ENERGY CONSERVATION CODE 8
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 803.3.3(6)
PERFORMANCE REQUIREMENTS FOR HEAT REJECTION EQUIPMENT
EQUIPMENT TYPE
TOTAL SYSTEM HEAT
REJECTION CAPACITY
AT RATED CONDITIONS
SUBCATEGORY OR RATING CONDITION
PERFORMANCE
REQUIRED 3 '"
TEST
PROCEDURE
95°F entering water
CTI ATC-105
Propeller or axial fan cooling towers
All
85°F leaving water
75°F wb outdoor air
>38.2gpm/hp
and
CTI STD-201
95°F entering water
CTI ATC-105
Centrifugal fan cooling towers
All
85°F leaving water
75°F wb outdoor air
> 20.0 gpm/hp
and
CTI STD-201
125°F condensing temperature
R-22 test fluid
> 176,000
Air-cooled condensers
All
190°F entering gas temperature
15°F subcooling
95°F entering db
Btu/h-hp
(69 COP)
ARI460
For SI: °C = [ (°F) - 32 ] / 1.8, 1 British thermal unit per hour = 0.2931W, 1 gallon per minute per horsepower = 0.846 L/s ■ kW.
wb = wet-bulb temperature, °F
a. For purposes of this table, cooling tower performance is defined as the maximum flow rating of the tower units (gpm) divided by the fan nameplate rated motor
power units (hp).
b. For purposes of this table, air-cooled condenser performance is defined as the heat rejected from the refrigerant units (Btu/h) divided by the fan nameplate rated
motor power units (hp).
c. Chapter 10 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.
803.3.3 HVAC system controls. Each heating and cooling
system shall be provided with thermostatic controls as re-
quired in Sections 803.3.3.1 through 803.3.3.5.
803.33. 1 Thermostatic controls. The supply of heating
and cooling energy to each zone shall be controlled by in-
dividual thermostatic controls capable of responding to
temperature within the zone. Where humidiflcation or
dehumidification or both is provided, at least one humid-
ity control device shall be provided for each humidity
control system
Exception: Independent perimeter systems that are
designed to offset only building envelope heat losses
or gains or both serving one or more perimeter zones
also served by an interior system provided:
1 . The perimeter system includes at least one ther-
mostatic control zone for each building expo-
sure having exterior walls facing only one
orientation (within +/- 45 degrees) (0.8 rad) for
more than 50 contiguous feet (15.2 m); and,
2. The perimeter system heating and cooling sup-
ply is controlled by a thermostat(s) located
within the zone(s) served by the system.
803.3.3.1.1 Heat pump supplementary heat. Heat
pumps having supplementary electric resistance heat
shall have controls that, except during defrost, prevent
supplementary heat operation when the heat pump
can meet the heating load.
803.3.3.2 Set point overlap restriction. Where used to
control both heating and cooling, zone thermostatic con-
trols shall provide a temperature range or deadband of at
least 5°F (A2.8°C) within which the supply of heating
and cooling energy to the zone is capable of being shut
off or reduced to a minimum.
Exception: Thermostats requiring manual change-
over between heating and cooling modes.
§©3.3.3.3 Off-hour controls. Each zone shall be pro-
vided with thermostatic setback controls that are con-
trolled by either an automatic time clock or
programmable control system.
1. Zones that will be operated continuously.
2. Zones with a full HVAC load demand not ex-
ceeding 6,800 Btu/h (2 kW) and having a
readily accessible manual shutoff switch.
803.3.3.3.1 Thermostatic setback capabilities.
Thermostatic setback controls shall have the capabil-
ity to set back or temporarily operate the system to
maintain zone temperatures down to 55°F (13°C) or
up to 85°F (29°C).
803.3.3.3.2 Automatic setback and shutdown ca-
pabilities. Automatic time clock or programmable
controls shall be capable of starting and stopping the
system for seven different daily schedules per week
and retaining their programming and time setting dur-
ing a loss of power for at least 10 hours. Additionally,
the controls shall have: a manual override that allows
temporary operation of the system for up to 2 hours; a
manually operated timer capable of being adjusted to
operate the system for up to 2 hours; or an occupancy
sensor.
803.3.3.4 Shutoff damper controls. Both outdoor air
supply and exhaust ducts shall be equipped with gravity
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
69
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
or motorized dampers that will automatically shut when
the systems or spaces served are not in use.
Exception: Individual supply systems with a design
airflow rate of 3,000 cfm (1416 L/s) or less.
803.3.3.5 Economizers. Economizers shall be provided
on each system with a cooling capacity greater than
65,000 Btu/h (19 kW) in accordance with Section
803.2.6.
Exceptions:
1. Water economizers that are capable of cooling
supply air by direct or indirect evaporation or
both and providing up to 100 percent of the ex-
pected system cooling load at outside air tem-
peratures of 50°F (10°C) dry bulb/45°F (7°C)
wet bulb and below.
2. Systems with a cooling capacity less than
135,000 Btu/h (40 kW) in Climate Zones 3c,
5b, 7, 13b, and 14.
803.3.3.6 Variable air volume (VAV) fan control. Indi-
vidual VAV fans with motors of 25 horsepower (18.8
kW) or greater shall be:
1 . Driven by a mechanical or electrical variable speed
drive; or
2. The fan motor shall have controls or devices that
will result in fan motor demand of no more than 30
percent of their design wattage at 50 percent of de-
sign air flow when static pressure set point equals
one-third of the total design static pressure, based
on manufacturer's certified fan data.
803.3.3.7 Hydronic systems controls. The heating of
fluids that have been previously mechanically cooled
and the cooling of fluids that have been previously me-
chanically heated shall be limited in accordance with
Sections 803.3.3.7.1 through 803.3.3.7.3. Hydronic
heating systems comprised of multiple-packaged boilers
and designed to deliver conditioned water or steam into a
common distribution system shall include automatic
controls capable of sequencing operation of the boilers.
Hydronic heating systems comprised of a single boiler
and greater than 500,000 Btu/h input design capacity
shall include either a multistaged or modulating burner.
803.3.3.7.1 Three-pipe system. Hydronic systems
that use a common return system for both hot water
and chilled water are prohibited.
803.3.3.7.2 Two-pipe changeover system. Systems
that use a common distribution system to supply both
heated and chilled water shall be designed to allow a
dead band between changeover from one mode to the
other of at least 15°F (A8.3°C) outside air tempera-
tures; be designed to and provided with controls that
will allow operation in one mode for at least 4 hours
before changing over to the other mode; and be pro-
vided with controls that allow heating and cooling
supply temperatures at the changeover point to be no
more than 30°F (A16.7°C) apart.
803.3.3.7.3 Hydronic (water loop) heat pump sys-
tems Hydronic heat pumps connected to a common heat
pump water loop with central devices for heat rejection
and heat addition shall have controls that are capable of
providing a heat pump water supply temperature dead
band of at least 20°F (Al 1.1 °C) between initiation of
heat rejection and heat addition by the central devices.
For Climate Zones 5a to 19 as indicated in Table
302. 1 , if a closed-circuit cooling tower is used, either
an automatic valve shall be installed to bypass all but a
minimal flow of water around the tower, or lower
leakage positive closure dampers shall be provided. If
an open-circuit tower is used directly in the heat pump
loop, an automatic valve shall be installed to bypass
all heat pump water flow around the tower. If an
open-circuit cooling tower is used in conjunction with
a separate heat exchanger to isolate the cooling tower
from the heat pump loop, then heat loss shall be con-
trolled by shutting down the circulation pump on the
cooling tower loop. Each hydronic heat pump on the
hydronic system having a total pump system power
exceeding 10 horsepower (hp) (7.5 kW) shall have a
two-position valve.
Exception: Where a system loop temperature op-
timization controller is installed and can determine
the most efficient operating temperature based on
real time conditions of demand and capacity, dead
bands of less than 20°F ( 1 1 . 1°C) shall be permitted.
803.3.3.7.4 Part load controls. Hydronic systems
greater than or equal to 300,000 Btu/h (87,930 W) in
design capacity supplying heated or chilled water to
comfort conditioning systems shall include controls
that have the capability to:
1. Automatically reset the supply water tempera-
tures using zone return water temperature,
building return water temperature , or outside air
temperature as an indicator of building heating
or cooling demand. The temperature shall be
capable of being reset by at least 25 percent of
the design supply-to-return water temperature
difference; or
2. Reduce system pump flow by at least 50 percent
of design flow rate utilizing adjustable speed
drive(s) on pump(s), multiple staged pumps
where at least one-half of the total pump horse-
power is capable of being automatically turned
off, control valves designed to modulate or step
down, and close, as a function of load, or other
approved means.
803.3.3.7.5 Pump isolation. Chilled water plants in-
cluding more than one chiller shall have the capability
to reduce flow automatically through the chiller plant
when a chiller is shut down. Chillers piped in series
for the purpose of increased temperature differential,
shall be considered as one chiller.
Boiler plants including more than one boiler shall
have the capability to reduce flow automatically
through the boiler plant when a boiler is shut down.
70
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
o>
Each fan powered by a motor of 7.5 hp (5 .6 kW) or larger
shall have the capability to operate that fan at two-thirds
of full speed or less, and shall have controls that automat-
ically change the fan speed to control the leaving fluid
temperature or condensing temperature/pressure of the
heat rejection device.
Exception: Factory-installed heat rejection devices
within HVAC equipment tested and rated in accor-
dance with Tables 803.3.2(1) through 803.3.2(6).
803.3.4 Requirements for complex mnieclhianical systems
serving multiple zones. Sections 803.3.4.1 through
803.3.4.3 shall apply to complex mechanical systems serv-
ing multiple zones. Supply air systems serving multiple
zones shall be VAV systems which, during periods of occu-
pancy, are designed and capable of being controlled to re-
duce primary air supply to each zone to one of the following
before reheating, recooling or mixing takes place:
1. Thirty percent of the maximum supply air to each
zone.
2. Three hundred cfm (142 L/s) or less where the maxi-
mum flow rate is less than 10 percent of the total fan
system supply airflow rate.
3. The minimum ventilation requirements of Chapter 4
of the International Mechanical Code.
Exception: The following define when individual zones
or when entire air distribution systems are exempted
from the requirement for VAV control:
1. Zones where special pressurization relationships
or cross-contamination requirements are such that
VAV systems are impractical.
2. Zones or supply air systems where at least 75 per-
cent of the energy for reheating or for providing
warm air in mixing systems is provided from a
site-recovered or site-solar energy source.
3. Zones where special humidity levels are required
to satisfy process needs.
4. Zones with a peak supply air quantity of 300 cfm
(142 L/s) or less and where the flow rate is less than
10 percent of the total fan system supply airflow
rate.
5. Zones where the volume of air to be reheated,
recooled or mixed is no greater than the volume of
outside air required to meet the minimum ventila-
tion requirements of Chapter 4 of the International
Mechanical Code.
6. Zones or supply air systems with thermostatic and
humidistatic controls capable of operating in se-
quence the supply of heating and cooling energy to
the zone(s) and which are capable of preventing re-
heating, recooling, mixing or simultaneous supply
of air that has been previously cooled, either me-
chanically or through the use of economizer sys-
tems, and air that has been previously
mechanically heated.
Single duct variable air volume (VAV) sys-
devices. Single duct VAV systems shall
use terminal devices capable of reducing the supply of
primary supply air before reheating or recooling takes
place.
803.3.4.2 Deal duct and mixing VAV systems, termi-
nal devices. Systems that have one warm air duct and
one cool air duct shall use terminal devices which are ca-
pable of reducing the flow from one duct to a minimum
before mixing of air from the other duct takes place.
803.3.4.3 Single fan deal duct and mixing VAV sys-
tems, economizers. Individual dual duct or mixing heat-
ing and cooling systems with a single fan and with total
capacities greater than 90,000 Btu/h [(26 375 W) 7.5
tons] shall not be equipped with air economizers.
803.3.S Ventilation. Ventilation shall be in accordance with
Section 803.2.5.
803.3.6 Duct and plenum insulation and sealing. All
ducts and plenums shall be insulated and sealed in accor-
dance with Section 803.2.8.
Ducts designed to operate at static pressures in excess of 3
inches w.g. (746 Pa) shall be leak-tested in accordance with
the SMACNA HVAC Air Duct Leakage Test Manual with
the rate of air leakage (CL) less than or equal to 6.0 as deter-
mined in accordance with Equation 8-2.
CL = FxP °- 65 (Equation 8-2)
where:
F = The measured leakage rate in cfm per 100 square
feet of duct surface.
P = The static pressure of the test.
Documentation shall be furnished by the designer dem-
onstrating that representative sections totaling at least 25
percent of the duct area have been tested and that all tested
sections meet the requirements of this section.
803.3.7 Piping insulation. All piping serving as part of a
heating or cooling system shall be thermally insulated in ac-
cordance with Table 803.3.7.
s:
1. Factory-installed piping within HVAC equipment
tested and rated in accordance with a test proce-
dure referenced by this code.
2. Piping that conveys fluids that have a design oper-
ating temperature range between 55°F (13°C) and
105°F(41°C).
3. Piping that conveys fluids that have not been
heated or cooled through the use of fossil fuels or
electric power.
4. Runout piping not exceeding 4 feet (1219 mm) in
length and 1 inch (25 mm) in diameter between the
control valve and HVAC coil.
803.3.8 HVAC system completion. Prior to the issuance of
a certificate of occupancy, the design professional shall pro-
vide evidence of system completion in accordance with
Sections 803.3.8.1 through 803.3.8.3.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
71
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 803.3.7
MINIMUM PIPE INSULATION 3
(thickness in inches)
FLUID
NOMINAL PIPE DIAMETER
< 1.5"
> 1.5"
Steam
IV,
3
Hot water
1
2
Chilled water, brine or refrigerant
1
IV,
For SI: 1 inch = 25.4 mm, British thermal unit per inch/h • ft 2 • °F = W per 25 mm/K ■ m 2 .
a. Based on insulation having a conductivity (k) not exceeding 0.27 Btu per inch/h • ft 2 ■ "F.
803.3.8.1 Air system balancing. Each supply air outlet
and zone terminal device shall be equipped with means
for air balancing in accordance with the requirements of
Chapter 6 of the International Mechanical Code. Dis-
charge dampers are prohibited on constant volume fans
and variable volume fans with motors 25 hp (18.6 kW)
and larger.
803.3.8.2 Hydronic system balancing. Individual
hydronic heating and cooling coils shall be equipped
with means for balancing and pressure test connections.
803.3.8.3 Manuals. The construction documents shall
require that an operating and maintenance manual be
provided to the building owner by the mechanical con-
tractor. The manual shall include, at least, the following:
1. Equipment capacity (input and output) and re-
quired maintenance actions.
2. Equipment operation and maintenance manuals.
3. HVAC system control maintenance and calibra-
tion information, including wiring diagrams, sche-
matics, and control sequence descriptions.
Desired or field-determined setpoints shall be per-
manently recorded on control drawings, at control
devices or, for digital control systems, in program-
ming comments.
4. A complete written narrative of how each system is
intended to operate.
803.3.9 Heat recovery for service water heating. Con-
denser heat recovery shall be installed for heating or reheat-
ing of service hot water provided the facility operates 24
hours a day, the total installed heat capacity of water-cooled
systems exceeds 6,000,000 Btu/hr of heat rejection, and the
design service water heating load exceeds 1 ,000,000 Btu/h.
The required heat recovery system shall have the capacity
to provide the smaller of:
1 . Sixty percent of the peak heat rejection load at design
conditions; or
2. The preheating required to raise the peak service hot
water draw to 85 °F (29 °C).
Exceptions:
1 . Facilities that employ condenser heat recovery for
space heating or reheat purposes with a heat recov-
ery design exceeding 30 percent of the peak
water-cooled condenser load at design conditions.
2. Facilities that provide 60 percent of their service
water heating from site solar or site recovered en-
ergy or from other sources
SECTION 804
SERVICE WATER HEATING
804.1 General. This section covers the minimum efficiency of,
and controls for, service water-heating equipment and insula-
tion of service hot water piping.
804.2 Service water-heating equipment performance effi-
ciency. Water-heating equipment and hot water storage tanks
shall meet the requirements of Table 804.2. The efficiency shall
be verified through data furnished by the manufacturer or
through certification under an approved certification program.
804.3 Temperature controls. Service water-heating equip-
ment shall be provided with controls to allow a setpoint of
1 10°F (43 °C) for equipment serving dwelling units and 90°F
(32°C) for equipment serving other occupancies. The outlet
temperature of lavatories in public facility rest rooms shall be
limited to 110°F(43°C).
804.4 Heat traps. Water-heating equipment not supplied with
integral heat traps and serving noncirculating systems shall be
provided with heat traps on the supply and discharge piping as-
sociated with the equipment.
804.5 Pipe insulation. For automatic-circulating hot water
systems, piping shall be insulated with 1 inch (25 mm) of
insulation having a conductivity not exceeding 0.27 Btu per
inch/h • ft 2 • °F (1.53 W per 25 mm/m 2 • K). The first 8 feet
(2438 mm) of piping in noncirculating systems served by
equipment without integral heat traps shall be insulated with
0.5 inch (12.7 mm) of material having a conductivity not
exceeding 0.27 Btu per inch/h • ft 2 ■ °F (1.53 W per 25 mm/m 2
•K).
804.6 Hot water system controls. Automatic-circulating hot
water system pumps or heat trace shall be arranged to be conve-
niently turned off automatically or manually when the hot wa-
ter system is not in operation.
72
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
! 804.2
fllNHMUM PERFORMANCE OF WATER-HEATING EQU1PWIEI*
EQUIPMENT TYPE
SIZE CATEGORY
(input)
SUBCATEGORY OR
RATING CONDITION
PERFORMANCE REQUIRED"
TEST
PROCEDURE
Water heaters, Electric
< 12 kW
Resistance
0.93 - 0.00132V EF
DOE 10 CFR
Part 430
> 12 kW
Resistance
1.73 V + 155 SL, Btu/h
ANSI Z21. 10.3
< 24 amps and
< 250 volts
Heat pump
0.93 - 0.00132V, EF
DOE 10 CFR
Part 430
Storage water heaters, Gas
< 75,000 Btu/h
> 20 gal
0.62 - 0.0019V EF
DOE 10 CFR
Part 430
> 75,000 Btu/h and
< 155,000 Btu/h
< 4,000 Btu/h/gal
80%£,
(q / 800 + 1 1 Vv) SL, Btu/h
ANSI Z21. 10.3
> 155,000 Btu/h
< 4,000 Btu/h/gal
80%£,
(Q / 800 + 1 loVv) SL, Btu/h
Instantaneous water heaters, Gas
> 50,000 Btu/h and
< 200,000 Btu/h d
> 4,000 (Btu/h)/gal and < 2 gal
0.62 -0.001 9 VEF
DOE 10 CFR
Part 430
> 200,000 Btu/h
> 4,000 Btu/h/gal and < 10 gal
80% E,
ANSI Z2 1.10.3
> 200,000 Btu/h
> 4,000 Btu/h/gal and > 10 gal
80%£
(Q / 800 + 1 loVv) SL, Btu/h
Storage water heaters, Oil
< 105,000 Btu/h
>20 gal
0.59 - 0.0019V, EF
DOE 10 CFR
Part 430
> 105,000 Btu/h
< 4,000 Btu/h/gal
78%£,
( Q / 800 + 1 1 Vvj SL, Btu/h
ANSI Z21. 10.3
Instantaneous water heaters, Oil
< 210,000 Btu/h
> 4,000 Btu/h/gal and < 2 gal
0.59 - 0.0019V EF
DOE 10 CFR
Part 430
> 210,000 Btu/h
> 4,000 Btu/h/gal and < 10 gal
80% E,
ANSI Z2 1.1 0.3
> 210,000 Btu/h
> 4,000 Btu/h/gal and > 10 gal
78%£,
(Q / 800 +1 loVvj SL, Btu/h
Hot water supply boilers,
Gas and Oil
> 300,000 Btu/h and
<12,500,000 Btu/h
> 4,000 Btu/h/gal and < 10 gal
80% E,
ANSI Z21. 10.3
Hot water supply boilers,
Gas and Oil
> 4,000 Btu/h/gal and > 10 gal
80%£,
( Q / 800 + 1 loVv) SL, Btu/h
Pool heaters,
Gas and Oil
All
—
78% E,
ASHRAE 146
Unfired storage tanks
All
—
< 6.5 Btu/h • ft 2
(none)
For SI: °C = [(°F) - 32] / 1.8, 1 British thermal unit per hour = 0.2931 W, 1 gallon = 3.785 L, 1 British thermal unit per hour per gallon = 0.078 W/L.
a . Energy factor (EF) and thermal efficiency (£,) are minimum requirements. In the EF equation, V is the rated volume in gallons
b. Standby loss (SL) is the maximum Btu/h based on a nominal 70°F temperature difference between stored water and ambient requirements. In the SL equation, Q is
the nameplate input rate in Btu/h. In the SL equation for electric water heaters, V is the rated volume in gallons. In the SL equation for oil and gas water heaters and
boilers, Vis the rated volume in gallons.
c. Instantaneous water heaters with input rates below 200,000 Btu/h must comply with these requirements if the water heater is designed to heat water to tempera-
tures 180°F or higher.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
73
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
SECTION 805
ELECTRICAL POWER AND LIGHTING SYSTEMS
805.1 General. This section covers lighting system controls,
the connection of ballasts, the maximum lighting power for in-
terior applications, and minimum acceptable lighting equip-
ment for exterior applications.
Exception: Lighting within dwelling units.
805.2 Lighting controls. Lighting systems shall be provided
with controls as required in Sections 805.2.1, 805.2.2 and
805.2.3.
805.2.1 Interior lighting controls. Each area enclosed by
walls or floor-to-ceiling partitions shall have at least one
manual control for the lighting serving that area. The re-
quired controls shall be located within the area served by the
controls or be a remote switch that identifies the lights
served and indicates their status.
Exceptions:
1 . Areas designated as security or emergency areas
that must be continuously lighted.
2. Lighting in stairways or corridors that are elements
of the means of egress.
805.2.2 Additional controls. Each area that is required to
have a manual control shall have additional controls that
meet the requirements of Sections 805.2.2.1, 805.2.2.2 and
805.2.2.3.
Exceptions:
1 . Areas that have only one luminaire.
2. Areas that are controlled by an occupant-sensing
device.
3. Corridors, storerooms, restrooms or public lob-
bies.
805.2.2.1 Light reduction controls. Each area that is re-
quired to have a manual control shall also allow the occu-
pant to reduce the connected lighting load in a reasonably
uniform illumination pattern by at least 50 percent.
Lighting reduction shall be achieved by one of the fol-
lowing or other approved method:
1. Controlling all lamps or luminaries;
2. Dual switching of alternate rows of luminaires, al-
ternate luminaires or alternate lamps;
3. Switching the middle lamp luminaires independ-
ently of the outer lamps; or
4. Switching each luminaire or each lamp.
Exceptions:
1. Areas that have only one luminaire.
2. Areas that are controlled by an occupant-sens-
ing device.
3. Corridors, storerooms, restrooms or public lob-
bies.
4. Guestrooms.
5. Spaces that use less than 0.6 Watts per square
foot (6.5 W/m).
805.2.2.2 Automatic lighting shutoff. Buildings larger
than 5,000 square feet (465 m 2 ) shall be equipped with an
automatic control device to shut off lighting in those ar-
eas. This automatic control device shall function on ei-
ther:
1 . A scheduled basis, using time-of-day, with an in-
dependent program schedule that controls the inte-
rior lighting in areas that do not exceed 25,000
square feet (2323 m 2 ) and are not more than one
floor; or
2. An unscheduled basis by occupant intervention.
805.2.2.2.1 Occupant override. Where an automatic
time switch control device is installed to comply with
Section 805.2.2.2, Item 1, it shall incorporate an over-
ride switching device that:
1. Is readily accessible.
2. Is located so that a person using the device can
see the lights or the area controlled by that
switch, or so that the area being lit is annunci-
ated.
3. Is manually operated.
4. Allows the lighting to remain on for no more
than 2 hours when an override is initiated.
5. Controls an area not exceeding 5,000 square
feet (465 m 2 ).
Exceptions:
1. In malls and arcades, auditoriums, sin-
gle-tenant retail spaces, industrial facilities
and arenas, where captive-key override is
utilized, override time may exceed 2 hours.
2. In malls and arcades, auditoriums, sin-
gle-tenant retail spaces, industrial facilities
and arenas, the area controlled may not ex-
ceed 20,000 square feet (1860 m 2 ).
805.2.2.2.2 Holiday scheduling. If an automatic time
switch control device is installed in accordance with
Section 805.2.2.2, Item 1, it shall incorporate an auto-
matic holiday scheduling feature that turns off all
loads for at least 24 hours, then resumes the normally
scheduled operation.
Exception: Retail stores and associated malls, res-
taurants, grocery stores, churches and theaters.
805.2.2.3 Guestrooms. Guestrooms in hotels, motels,
boarding houses or similar buildings shall have at least
one master switch at the main entry door that controls all
permanently wired lighting fixtures and switched recep-
tacles, except those in the bathroom(s). Suites shall have
a control meeting these requirements at the entry to each
room or at the primary entry to the suite.
805.2.3 Exterior lighting controls. Automatic switching or
photocell controls shall be provided for all exterior lighting
not intended for 24-hour operation. Automatic time
switches shall have a combination seven-day and seasonal
daylight program schedule adjustment, and a minimum
4-hour power backup.
74
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
805.3 Tandemu wiring. The following luminaires located
within the same area shall be tandem wired:
1. Flourescent luminaires equipped with one, three or odd-
numbered lamp configurations, that are recess-mounted
within 10 feet (3048 mm) center-to-center of each other.
2. Flourescent luminaires equipped with one, three or any
other odd-numbered lamp configuration, that are pen-
dant- or surface-mounted within 1 foot (305 mm)
edge-to-edge of each other.
tions:
1. Where electronic high-frequency ballasts are used.
2. Luminaires on emergency circuits.
3. Luminaires with no available pair in the same area.
805.4 Exit signs. Internally illuminated exit signs shall not ex-
ceed 5 Watts per side.
805.5 Interior lighting power requirements. A building
complies with this section if its total connected lighting power
calculated under Section 805.5.1 is no greater than the interior
lighting power calculated under Section 805.5.2.
805.5.1 Total connected imterioir lighting power. The total
connected interior lighting power (Watts) shall be the sum of
the watts of all interior lighting equipment as determined in
accordance with Sections 805.5.1.1 through 805.5.1.4.
Exceptions: The connected power associated with the
following lighting equipment is not included in calculat-
ing total connected lighting power.
1 . Specialized medical, dental and research lighting.
2. Professional sports arena playing field lighting.
3. Display lighting for exhibits in galleries, museums
and monuments.
4. Guestroom lighting in hotels, motels, boarding
houses or similar buildings.
5. Emergency lighting automatically off during nor-
mal building operation.
805.5.1.1 Screw lamp holders. The wattage shall be the
maximum labeled wattage of the luminaire.
§©5.5.1.2 Low-voltage lighting. The wattage shall be
the specified wattage of the transformer supplying the
system.
805.5.1.3 Otheir tamimaires. The wattage of all other
lighting equipment shall be the wattage of the lighting
equipment verified through data furnished by the manu-
facturer or other approved sources.
805.5.1.4 Lime-voltage lighting track and pleg-in
bnsway. The wattage shall be the greater of the wattage
of the luminaires determined in accordance with Sec-
tions 805.5.1.1 through 805.5.1.3 or 30 W/linear foot
(98W/lin m).
805.5.2 Interior lighting power. The interior lighting
power shall be calculated using Section 805.5.2.1 or
805.5.2.2 as applicable.
805.5.2.1 Entire building method. Under this ap-
proach, the interior lighting power (Watts) is the value
from Table 805.5.2 for the building type times the condi-
tioned floor area of the entire building. The interior light-
ing power (Watts) shall not be increased by the
allowances contained in the footnotes of Table 805.5.2
when using the entire building method.
805.5.2.2 Tenant area or portion of building method.
The total interior lighting power (Watts) is the sum of all
interior lighting powers for all areas in the building cov-
ered in this permit. The interior lighting power is the con-
ditioned floor area for each area type listed in Table
805.5.2 times the value from Table 805.5.2 for that area.
For the purposes of this method, an "area" shall be de-
fined as all contiguous spaces that accommodate or are
associated with a single area type as listed in Table
805.5.2. When this method is used to calculate the total
interior lighting power for an entire building, each area
type shall be treated as a separate area.
ig. When the power for exterior lighting
is supplied through the energy service to the building, all exte-
rior lighting, other than low-voltage landscape lighting, shall
have a source efficacy of at least 45 lumens per Watt.
n: Where approved because of historical, safety,
signage or emergency considerations.
805.7 Electrical energy consumption. In buildings having in-
dividual dwelling units, provisions shall be made to determine
the electrical energy consumed by each tenant by separately
metering individual dwelling units.
1UBLD8NG PERFORMANCE
806.1 General. The proposed design complies with this sec-
tion where annual energy costs of the proposed design as deter-
mined in accordance with Section 806.3 do not exceed those of
the standard design as determined in accordance with Section
806.4.
80(5.2 Analysis procedures. Sections 806.2.1 through 806.2.8
shall be applied in determining total building performance.
rgy analysis. Annual (8,760 hours) energy
costs for the standard design and the proposed design shall
each be determined using the same approved energy analy-
sis simulation tool.
806.2.2 Climate data. The climate data used in the energy
analysis shall cover a full calendar year (8,760 hours) and
shall reflect approved coincident hourly data for tempera-
ture, solar radiation, humidity and wind speed for the build-
ing location.
806.2.3 Energy rates. The annual energy costs shall be esti-
mated using energy rates published by the serving energy
supplier and which would apply to the actual building or
DOE State-Average Energy Prices published by DOE's En-
ergy Information Administration and which would apply to
the actual building.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
75
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 805.5.2
INTERIOR LIGHTING POWER
BUILDING OR AREA TYPE
ENTIRE BUILDING
(wm 2 )
TENANT AREA OR PORTION OF BUILDING
(W/ft 2 )
Auditorium
Not Applicable
1.8
Automotive facility
0.9
Not Applicable
Bank/financial institution"
Not Applicable
1.5
Classroom/lecture hall "
Not Applicable
1.4
Convention, conference or meeting center '
1.2
1.3
Corridor, restroom, support area
Not Applicable
0.9
Courthouse/town hall
1.2
Not Applicable
Dining"
Not Applicable
0.9
Dormitory
1.0
NA
Exercise center"
1.0
0.9
Exhibition hall
Not Applicable
1.3
Grocery store 1
1.5
1.6
Gymnasium playing surface
Not Applicable
1.4
Hotel function"
1.0
1.3
Industrial work, < 20-foot ceiling height
Not Applicable
1.2
Industrial work, > 20-foot ceiling height
Not Applicable
1.7
Kitchen
Not Applicable
1.2
Library '
1.3
1.7
Lobby — hotel '
Not Applicable
1.1
Lobby — other *
Not Applicable
1.3
Mall, arcade, or atrium
Not Applicable ^
0.6
Medical and clinical care M
1.2
1.2
Motel
1.0
Not Applicable
Multifamily
0.7
Not Applicable
Museum b
1.1
1.0
Office"
1.0
1.1
Parking garage
0.3
Not Applicable
Penitentiary
1.0
Not Applicable
Police/fire station
1.0
Not Applicable
Post office
1.1
Not Applicable
Religious worship "
1.3
2.4
Restaurant *
1.6
0.9
Retail sales, wholesale showroom'
1.3
1.7
School
1.2
Not Applicable
Storage, industrial and commercial
0.8
0.8
Theaters — motion picture
1.2
1.2
Theaters — performance "
1.6
2.6
Transportation
1.0
Not Applicable
Other
0.6
1.0
For SI: 1 foot = 304.8 mm, 1 Watts per square foot = W/0.0929 m 2 .
a. Where lighting equipment is specified to be installed for decorative appearances in addition to lighting equipment specified for general lighting and is switched or
dimmed on circuits different from the circuits for general lighting, the smaller of the actual wattage of the decorative lighting equipment or 1 .0 W/ft 2 times the area
of the space that the decorative lighting equipment is in shall be added to the interior lighting power determined in accordance with this line item.
b. Where lighting equipment is specified to be installed to meet requirements of visual display terminals as the primary viewing task, the smaller of the actual wattage
of the lighting equipment or 0.35 W/ft 2 times the area of the space that the lighting equipment is in shall be added to the interior lighting power determined in accor-
dance with this line item.
c. Where lighting equipment is specified to be installed to highlight specific merchandise in addition to lighting equipment specified for general lighting and is
switched or dimmed on circuits different from the circuits for general lighting, the smaller of the actual wattage of the lighting equipment installed specifically for
merchandise, or 1.6 W/ft 2 times the area of the specific display, or 3.9 W/ft 2 times the actual case or shelf area for displaying and selling fine merchandise such as
jewelry, fine apparel and accessories, or china and silver, shall be added to the interior lighting power determined in accordance with this line item.
d. Where lighting equipment is specified to be installed, the smaller of the actual wattage of the lighting equipment, or 1.0 W/ft 2 times the area of the emergency, re-
covery, medical supply and pharmacy space shall be added to the interior lighting power determined in accordance with this line item.
78
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
806.2.4 Nondepletable energy. Nondepletable energy col-
lected off site shall be treated and priced the same as pur-
chased energy. Energy from nondepletable energy sources
collected on site shall be omitted from the annual energy
cost of the proposed design. The analysis and performance
of any nondepletable energy system shall be determined in
accordance with accepted engineering practice using ap-
proved methods.
806.2 J Building operation. Building operation shall be
simulated for a full calendar year (8,760 hours). Operating
schedules shall include hourly profiles for daily operation
and shall account for variations between weekdays, week-
ends, holidays, and any seasonal operation. Schedules shall
model the time-dependent variations of occupancy, illumi-
nation, receptacle loads, thermostat settings, mechanical
ventilation, HVAC equipment availability, service hot water
usage, and any process loads.
Is. The following systems and loads
shall be modeled in determining total building performance:
heating systems, cooling systems, fan systems, lighting
power, receptacle loads, and process loads that exceed 1.0
W/ft 2 (W/0.0929 m 2 ) of floor area of the room or space in
which the process loads are located.
Exception; Systems and loads serving required emer-
gency power only.
806.2.7 Service water=heating systems. Service wa-
ter-heating systems that are other than combined service hot
water/space-heating systems shall be be omitted from the
energy analysis provided all requirements in Section 804
have been met.
806.2.8 Exterior flighting. Exterior lighting systems shall
be the same as in the standard and proposed designs.
806.3 Determining energy costs for tlhe proposed design.
Building systems and loads shall be simulated in the Proposed
design in accordance with Sections 806.3.1 and 806.3.2.
.1 HVAC and service water=heating equipment All
HVAC and service water-heating equipment shall be simu-
lated in the proposed design using capacities, rated efficien-
cies and part-load performance data for the proposed
equipment as provided by the equipment manufacturer.
806.3.2 Features mot documented at time of permit. If
any feature of the proposed design is not included in the
building permit application, the energy performance of that
feature shall be assumed to be that of the corresponding fea-
ture used in the calculations required in Section 806.4.
806.4 Determining energy costs for the standard design.
Sections 806.4.1 through 806.4.7 shall be used in determining
the annual energy costs of the Standard design.
lipment efficiency. The space-heating,
space-cooling, service water-heating, and ventilation sys-
tems and equipment shall meet, but not exceed, the mini-
mum efficiency requirements of Sections 803 and 804.
806.4.2 HVAC system capacities. HVAC system capacities
in the standard design shall be established such that no
smaller number of unmet heating and cooling load hours
and no larger heating and cooling capacity safety factors are
provided than in the proposed design.
806.4.3 Envelope. The performance of elements of the ther-
mal envelope of the standard design shall be determined in
accordance with the requirements of Section 802.2 as appli-
cable.
806.4.4 Identical characteristics. The heating/cooling
system zoning, the orientation of each building feature, the
number of floors and the gross envelope areas of the stan-
dard design shall be the same as those of the proposed de-
sign except as modified by Section 806.4.5 or 806.4.6.
m: Permanent fixed or movable external shad-
ing devices for windows and glazed doors shall be ex-
cluded from the standard design.
806.4.5 Window area. The window area of the standard de-
sign shall be the same as the proposed design, or 35 percent
of the above-grade wall area, whichever is less, and shall be
distributed in a uniform pattern equally over each building
facade.
806.4.6 Skylight area. The skylight area of the standard de-
sign shall be the same as the proposed design, or 3 percent of
the gross area of the roof assembly, whichever is less.
806.4.7 Interior lighting. The lighting power for the stan-
dard design shall be the maximum allowed in accordance
with Section 805.4. Where the occupancy of the building is
not known, the lighting power density shall be 1 .5 Watts per
square foot (16.1 W/m 2 ).
i. The energy analysis and supporting
documentation shall be prepared by a registered design profes-
sional where required by the statutes of the jurisdiction in
which the project is to be constructed. The information docu-
menting compliance shall be submitted in accordance with
Sections 806.5.1 through 806.5.4
l energy use and associated costs. The an-
nual energy use and costs by energy source of the standard
design and the proposed design shall be clearly indicated.
§06.5.2 Energy-related features. A list of the energy-re-
lated features that are included in the proposed design and
on which compliance with the provisions of the code are
claimed shall be provided to the code official. This list shall
include and prominently indicate all features that differ
from those set forth in Section 806.4 and used in the energy
analysis between the standard design and the proposed de-
sign.
806.5.3 Input and output report(s). Input and output re-
ports) from the energy analysis simulation program con-
taining the complete input and output files, as applicable.
The output file shall include energy use totals and energy
use by energy source and end-use served, total hours that
space conditioning loads are not met and any errors or warn-
ing messages generated by the simulation tool as applicable.
806.5.4 Written explanatiom(s). An explanation of any er-
ror or warning messages appearing in the simulation tool
output shall be provided in a written, narrative format.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
77
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(5)
BUILDING ENVELOPE REQUIREMENTS 3 ' hrou 9 h e - CLIMATE ZONE 1a
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (l/-factor)
1
Slab or below-grade wall (if-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(/-factor
Any
Any
0.25 <PF< 0.50
Any
Any
PF > 0.50
Any
Any
Roof assemblies (U-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-13
R-ll
Metal joist/truss
R-13
R-12
Concrete slab or deck
NA
R-ll
Metal purlin with thermal block
R-19
R-12
Metal purlin without thermal block
R-30
R-12
Floors over outdoor air or unconditioned space (if -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-0
R-0
Metal joist/truss
R-0
R-0
Concrete slab or deck
NA
R-0
Above-grade walls (R -value)
Framed
No framing
Metal framing
Wood framing
if-value cavity
NA
R-0
R-0
/f-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
ft-value cavity
NA
R-0
R-0
fl-value continuous
R-0
R-0
R-0
Other masonry walls
S-value cavity
NA
R-0
R-0
ft- value continuous
R-0
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (J/-factor)
1
Slab or below-grade wall (U-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
tAfactor
0.6
Any
0.25 <PF< 0.50
0.7
Any
PF > 0.50
Any
Any
Roof assemblies (R- value)
All- wood joist/truss
Insulation between framing
Continuous Insulation
R-19
R-14
Metal joist/truss
R-19
R-15
Concrete slab or deck
NA
R-14
Metal purlin with thermal block
R-25
R-15
Metal purlin without thermal block
X
R-15
Floors over outdoor air or unconditioned space (i?-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-0
R-0
Metal joist/truss
R-0
R-0
Concrete slab or deck
NA
R-0
Above-grade walls (ff-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-0
R-0
/?-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/?-value cavity
NA
R-0
R-0
lvalue continuous
R-0
R-0
R-0
Other masonry walls
if-value cavity
NA
R-0
R-0
ff-value continuous
R-0
R-0
R-0
(continued)
78
2003 INTERNATIONAL ENERGY CONSERVATION CODE 18
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(5) — continued
BUILDING ENVELOPE REQUIREMENTS 3 throu 9 h e - CLIMATE ZONE 1a
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (U-lactor)
1
Slab or below-grade wall (J? -value)
R-0
Windows and glass doors
PF < 0.25
SHGC
y-factor
0.4
0.7
0.25 < PF < 0.50
0.5
0.7
PF > 0.50
0.6
0.7
Roof assemblies (H-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
X
R-17
Floors over outdoor air or unconditioned space (if-vatae)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-0
R-0
Metal joist/truss
R-0
R-0
Concrete slab or deck
NA
R-0
Above-grade walls (ff-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-0
R-0
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
Other masonry walls
fl-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
1
Slab or below-grade wall (/f-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
IMactor
0.3
0.7
0.25 < PF < 0.50
0.4
0.7
PF > 0.50
0.5
0.7
Roof assemblies (U-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
R-30
R-17
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-0
R-0
Metal joist/truss
R-0
R-0
Concrete slab or deck
NA
R-0
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-0
R-0
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An /{-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
79
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(6)
BUILDING ENVELOPE REQUIREMENTS 3 throu 9 h e - CLIMATE ZONE 1 b
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITIONWALUE
Skylights (fJ-factor)
1
Slab or below-grade wall (R-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(/-factor
Any
Any
0.25 < PF < 0.50
Any
Any
PF > 0.50
Any
Any
Roof assemblies (R- value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-15
Concrete slab or deck
NA
R-14
Metal purlin with thermal block
R-25
R-15
Metal purlin without thermal block
X
R-15
Floors over outdoor air or unconditioned space (R-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-0
R-0
Metal joist/truss
R-0
R-0
Concrete slab or deck
NA
R-0
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-0
R-0
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (f-factor)
1
Slab or below-grade wall (R-value)
R-0
Windows and glass doors
PF<0.25
SHGC
(/-factor
0.6
Any
0.25 <PF< 0.50
0.7
Any
PF > 0.50
Any
Any
Roof assemblies (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-15
Concrete slab or deck
NA
R-14
Metal purlin with thermal block
R-25
R-15
Metal purlin without thermal block
X
R-15
Floors over outdoor air or unconditioned space (R -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-0
R-0
Metal joist/truss
R-0
R-0
Concrete slab or deck
NA
R-0
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-0
R-0
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
(continued)
80
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
TABLE 802.2(6)-
ENVELOPE REQU1REMEN
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
-continued
rs a through e . CLIMATE ZONE 1 b
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
1
Slab or below-grade wall (A -value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.5
0.7
0.25 < PF < 0.50
0.6
0.7
PF > 0.50
0.7
0.7
Roof assemblies (ff -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-15
Concrete slab or deck
NA
R-14
Metal purlin with thermal block
R-25
R-15
Metal purlin without thermal block
X
R-15
Floors over outdoor air or unconditioned space (S-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-0
R-0
Metal joist/ truss
R-0
R-0
Concrete slab or deck
NA
R-0
Above-grade walls (S-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-0
R-0
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/?-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
1
Slab or below-grade wall (JJ-vatae)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.4
0.7
0.25 < PF < 0.50
0.5
0.7
PF > 0.50
0.7
0.7
Roof assemblies (J? -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-15
Concrete slab or deck
NA
R-14
Metal purlin with thermal block
R-25
R-15
Metal purlin without thermal block
R-30
R-15
Floors over outdoor air or unconditioned space (it-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-0
R-0
Metal joist/truss
R-0
R-0
Concrete slab or deck
NA
R-0
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-0
R-0
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An /{-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
81
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(7)
BUILDING ENVELOPE REQUIREMENTS 3 throu 9 he - CLIMATE ZONE 2a
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ([/-factor)
1
Slab or below-grade wall (R-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
Any
Any
0.25 < PF < 0.50
Any
Any
PF > 0.50
Any
Any
Roof assemblies (A -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-13
Metal joist/truss
R-19
R-14
Concrete slab or deck
NA
R-13
Metal purlin with thermal block
R-19
R-14
Metal purlin without thermal block
X
R-14
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-0
R-0
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-0
Above-grade walls (if-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-0
R-0
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
i?-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ((/-factor)
1
Slab or below-grade wall (/{-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
LMactor
0.5
Any
0.25 < PF < 0.50
0.6
Any
PF > 0.50
0.7
Any
Roof assemblies (R -value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-13
Metal joist/truss
R-19
R-14
Concrete slab or deck
NA
R-13
Metal purlin with thermal block
R-19
R-14
Metal purlin without thermal block
X
R-14
Floors over outdoor air or unconditioned space (if-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-0
R-0
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-0
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-0
R-0
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
(continued)
82
2003 INTERNATIONAL ENERGY CONSERVATION CODE 18
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(7) — continued
BUILDING ENVELOPE REQUIREMENTS 3 thrau s h e - CLIMATE ZONE 2a
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (£/-f actor)
1
Slab or below-grade wall (it-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.4
0.7
0.25 < PF < 0.50
0.5
0.7
PF > 0.50
0.6
0.7
Roof assemblies (J?-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-13
Metal joist/truss
R-19
R-14
Concrete slab or deck
NA
R-13
Metal purlin with thermal block
R-19
R-14
Metal purlin without thermal block
X
R-14
Floors over outdoor air or unconditioned space (j?-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-0
R-0
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-0
Above-grade walls (J? -value)
Framed
No framing
Metal framing
Wood framing
/t-value cavity
NA
R-0
R-0
/t-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/t-value cavity
NA
R-0
R-0
/t-value continuous
R-0
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (V -factor)
1
Slab or below-grade wall (it-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.4
0.7
0.25 < PF < 0.50
0.5
0.7
PF>0.50
0.6
0.7
Roof assemblies (it-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-13
Metal joist/truss
R-19
R-14
Concrete slab or deck
NA
R-13
Metal purlin with thermal block
R-19
R-14
Metal purlin without thermal block
R-25
R-14
Floors over outdoor air or unconditioned space (it-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-0
R-0
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-0
Above-grade walls (it-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-7
R-7
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/t-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-0
R-0
/t-value continuous
R-0
R-0
R-0
For SI: 1 inch =25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
' b. "NA" indicates the condition is not applicable.
c. An /t-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODi
83
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(8)
BUILDING ENVELOPE REQUIREMENTS 3 lnrou 9 h e - CLIMATE ZONE 2b
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ([/-factor)
1
Slab or below-grade wall (R -value)
R-0
Windows and glass doors
PF<0.25
SHGC
(/■factor
Any
Any
0.25 <PF< 0.50
Any
Any
PF > 0.50
Any
Any
Roof assemblies (R -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
X
R-17
Floors over outdoor air or unconditioned space (R -value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-l
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-0
R-0
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-0
R-0
J?-value continuous
R-0
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ([/-factor)
1
Slab or below-grade wall (R-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(/-factor
0.5
Any
0.25 < PF < 0.50
0.6
Any
PF>0.50
0.7
Any
Roof assemblies (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
X
R-17
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-l
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-0
R-0
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
(continued)
2003 INTERNATIONAL ENERGY CONSERVATION CODE 18
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(8)^contioued
3UILD1NG ENVELOPE REQUIREMENTS 3 throu 9 h e ■ CLIMATE ZONE 2b
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
1
Slab or Mow-grade wall (R-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.5
0.7
0.25 <PF< 0.50
0.6
0.7
PF>0.50
0.7
0.7
Roof assemblies (i?-valiie)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
X
R-17
Floors over outdoor air or unconditioned space (J?-vaEne)
All-wood joist/truss
Insulation between training
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-l
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
/?-value cavity
NA
R-ll
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/?-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
-R-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
1
Slab or below-grade wall (#J-vaIue)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.4
0.7
0.25 <PF< 0.50
0.5
0.7
PF > 0.50
0.7
0.7
Roof assemblies (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
R-30
R-17
Floors over outdoor air or unconditioned space (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-l
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-ll
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An R-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
85
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(9)
BUILDING ENVELOPE REQUIREMENTS 3 ,hrou 9 h e - CLIMATE ZONE 3a
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
1
Slab or below-grade wall (R-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
Any
Any
0.25 < PF < 0.50
Any
Any
PF>0.50
Any
Any
Roof assemblies (if -value)
All-wood joist/truss
Insulation between framing
Continuous Insulation
R-ll
R-9
Metal joist/truss
R-ll
R-10
Concrete slab or deck
NA
R-9
Metal purlin with thermal block
R-13
R-10
Metal purlin without thermal block
R-25
R-10
Floors over outdoor air or unconditioned space (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-2
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-0
R-0
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
lvalue cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
1
Slab or below-grade wall (R-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(/■factor
0.6
Any
0.25 <PF< 0.50
0.7
Any
PF>0.50
Any
Any
Roof assemblies (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-12
Metal joist/truss
R-19
R-13
Concrete slab or deck
NA
R-12
Metal purlin with thermal block
R-19
R-13
Metal purlin without thermal block
R-30
R-13
Floors over outdoor air or unconditioned space (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-2
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-0
R-0
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
(continued)
86
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(9) — continued
BUILDING ENVELOPE REQUIREMENTS 3 throu 9 h e - CLIMATE ZONE 3a
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ((/-factor)
1
Slab or below-grade wall (it-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
{/-factor
0.5
0.7
0.25 < PF < 0.50
0.6
0.7
PF>0.50
0.7
0.7
Roof assemblies (it-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-12
Metal joist/truss
R-19
R-13
Concrete slab or deck
NA
R-12
Metal purlin with thermal block
R-19
R-13
Metal purlin without thermal block
R-30
R-13
Floors over outdoor air or unconditioned space (it-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-2
Above-grade walls (A-value)
Framed
No framing
iWetal framing
Wood framing
Rvalue cavity
NA
R-ll
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (^/-factor)
1
Slab or below-grade wall (it-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.4
0.7
0.25 < PF < 0.50
0.5
0.7
PF > 0.50
0.7
0.7
Roof assemblies (if- value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-12
Metal joist/truss
R-19
R-13
Concrete slab or deck
NA
R-12
Metal purlin with thermal block
R-19
R-13
Metal purlin without thermal block
R-30
R-13
Floors over outdoor air or unconditioned space (it-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-2
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-ll
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An R-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
87
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(10)
BUILDING ENVELOPE REQUIREMENTS" throu 9 h e - CLIMATE ZONE 3b
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (l/-factor)
1
Slab or below-grade wall (/?-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(/-factor
Any
Any
0.25 <PF< 0.50
Any
Any
PF>0.50
Any
Any
Roof assemblies (K-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-12
Metal joist/truss
R-19
R-13
Concrete slab or deck
NA
R-12
Metal purlin with thermal block
R-19
R-13
Metal purlin without thermal block
R-30
R-13
Floors over outdoor air or unconditioned space (Jt-value)
All- wood j oisty truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-2
Above-grade walls (/f-value)
Framed
No framing
Metal framing
Wood framing
i?-value cavity
NA
R-0
R-0
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R- value cavity
NA
R-0
R-0
i?-value continuous
R-0
R-0
R-0
Other masonry walls
R- value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0 j
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
1
Slab or below-grade wall (/f-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.5
Any
0.25 <PF< 0.50
0.6
Any
PF>0.50
0.7
Any
Roof assemblies (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-12
Metal joist/truss
R-19
R-13
Concrete slab or deck
NA
R-12
Metal purlin with thermal block
R-19
R-13
Metal purlin without thermal block
R-30
R-13
Floors over outdoor air or unconditioned space (U-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-2
Above-grade walls (R-vatae)
Framed
No framing
Metal framing
Wood framing
^-value cavity
NA
R-0
R-0
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
Other masonry walls
/J-value cavity
NA
R-0
R-0
/f-value continuous
R-0
R-0
R-0
(continued)
- --
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(10) — continued
BUILDING ENVELOPE REQUIREMENTS 3 throu 9 h e - CLIMATE ZONE 3b
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ((/-factor)
1
Slab or below-grade wall (R -value)
R-0
Windows and glass doors
PF<0.25
SHGC
W-factor
0.4
0.7
0.25 < PF < 0.50
0.5
0.7
PF > 0.50
0.6
0.7
Koof assemblies (i?-valne)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-12
Metal joist/truss
R-19
R-13
Concrete slab or deck
NA
R-12
Metal purlin with thermal block
R-19
R-13
Metal purlin without thermal block
R-30
R-13
Floors over outdoor air or unconditioned space (S-vatae)
All- wood joist/truss
Insulation between framing
Continuous Insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-2
Above-grade walls (it-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-0
R-0
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/?-value cavity
NA
R-0
R-0
R- value continuous
R-0
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (t/-factor)
1
Slab or below-grade wall (It-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(Afacior
0.4
0.7
0.25 < PF < 0.50
0.5
0.7
PF>0.50
0.6
0.7
Koof assemblies (it-value)
All-wood joist/ truss
Insulation between framing
Continuous insulation
R-19
R-12
Metal joist/truss
R-19
R-13
Concrete slab or deck
NA
R-12
Metal purlin with thermal block
R-19
R-13
Metal purlin without thermal block
R-30
R-13
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-2
Above-grade walls (it-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-7
R-7
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An /{-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION COD!
89
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(11)
:m MDcycMTca thr<
BUILDING ENVELOPE REQUIREMENTS 3 ,hrou 9 h e - CLIMATE ZONE 3c
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (V -factor)
1
Slab or below-grade wall (R -value)
R-0
Windows and glass doors
PF<0.25
SHGC
(/■factor
Any
Any
0.25 <PF< 0.50
Any
Any
PF > 0.50
Any
Any
Roof assemblies (R-valne)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
X
R-17
Floors over outdoor air or unconditioned space (/{-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-2
Above-grade walls (if -value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-0
R-0
Rvalue continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
Other masonry walls
R- value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
1
Slab or below-grade wall (K-value)
R-0
Windows and glass doors
PF<0.25
SHGC
(/■factor
0.5
Any
0.25 <PF< 0.50
0.6
Any
PF > 0.50
0.7
Any
Roof assemblies (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-2
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-ll
R-0
R- value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
(continued)
90
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(11)— continued
BUILDING ENVELOPE REQUIREMENTS 3 throu 9 h e - CLIMATE ZONE 3c
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (^/-factor)
1
Slab or below-grade wall (R-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.4
0.7
0.25 < PF < 0.50
0.5
0.7
PF > 0.50
0.6
0.7
Roof assemblies (R-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-2
Above-grade walls (if -value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-ll
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (17-factor)
1
Slab or below-grade wall (R -value)
R-0
Windows and glass dloors
PF < 0.25
SHGC
U-factor
0.4
0.7
0.25 < PF < 0.50
0.5
0.7
PF > 0.50
0.6
0.7
Roof assemblies (A- value)
All-wood joist/truss
Insulation between framing
Continuous Insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
R-38
R-20
Floors over outdoor air or unconditioned space (it-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-2
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-ll
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-0
R-0
R- value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An R-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
91
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(12)
BUILDING ENVELOPE REQUIREMENTS 3 tnrou 9 h e - CLIMATE ZONE 4a
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
1
Slab or below-grade wall (it-value)
R-0
Windows and glass doors
PF<0.25
SHGC
(/■factor
Any
Any
0.25 <PF< 0.50
Any
Any
PF > 0.50
Any
Any
Roof assemblies (it-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-13
R-ll
Metal joist/trass
R-13
R-12
Concrete slab or deck
NA
R-ll
Metal purlin with thermal block
R-19
R-12
Metal purlin without thermal block
R-30
R-12
Floors over outdoor air or unconditioned space (it-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-3
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
it-value cavity
NA
R-0
R-0
it-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
it-value cavity
NA
R-0
R-0
it-value continuous
R-0
R-0
R-0
Other masonry walls
it-value cavity
NA
R-0
R-0
it-value continuous
R-0
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
1
Slab or below-grade wall (it-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(/-factor
0.6
Any
0.25 < PF < 0.50
0.7
Any
PF > 0.50
Any
Any
Roof assemblies (it-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-12
Metal joist/truss
R-19
R-13
Concrete slab or deck
NA
R-12
Metal purlin with thermal block
R-19
R-13
Metal purlin without thermal block
R-30
R-13
Floors over outdoor air or unconditioned space (it-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-3
Above-grade walls (it-value)
Framed
No framing
Metal framing
Wood framing
it-value cavity
NA
R-ll
R-ll
it-value continuous
NA
NA
NA
CMU, > 8 inches, with integral insulation
it-value cavity
NA
R-0
R-0
it-value continuous
R-0
R-0
R-0
Other masonry walls
it-value cavity
NA
R-0
R-0
it-value continuous
R-0
R-0
R-0
(continued)
92
2003 INTERNATIONAL ENERGY CONSERVATION CODE*
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(12)— continued
3UILDING ENVELOPE REQUIREMENTS 3 throu 9 ne - CLIMATE ZONE 4a
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
1
Slab or below-grade wall (R-vatae)
R-0
Wimdows and glass doors
PF < 0.25
SHGC
U-factor
0.5
0.7
0.25 < PF < 0.50
0.6
0.7
PF > 0.50
0.7
0.7
Moof assemblies (J?- value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-12
Metal joist/truss
R-19
R-13
Concrete slab or deck
NA
R-12
Metal purlin with thermal block
R-19
R-13
Metal purlin without thermal block
R-30
R-13
Floors over outdoor air or unconditioned space (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-3
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-ll
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-0
R-0
R- value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (£/-factor)
1
Slab or below-grade wall (R-value)
R-0
Windows and glass doors
PF<0.25
SHGC
U-factor
0.4
0.7
0.25 <PF< 0.50
0.5
0.7
PF > 0.50
0.7
0.7
Roof assemblies (R -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-12
Metal joist/truss
R-19
R-13
Concrete slab or deck
NA
R-12
Metal purlin with thermal block
R-19
R-13
Metal purlin without thermal block
R-30
R-13
Floors over outdoor air or unconditioned space (R -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-3
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-ll
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An R-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(13)
BUILDING ENVELOPE REQUIREMENTS 3 throu 9 h e - CLIMATE ZONE 4b
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (J7-factor)
1
Slab or below-grade wall (R-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
LMactor
Any
Any
0.25 <PF< 0.50
Any
Any
PF > 0.50
Any
Any
Roof assemblies (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
X
R-17
Floors over outdoor air or unconditioned space (iJ-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-4
Above-grade walls (/J-value)
Framed
No framing
Metal framing
Wood framing
/J-value cavity
NA
R-ll
R-ll
/J-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/J-value cavity
NA
R-0
R-0
/J-value continuous
R-0
R-0
R-0
Other masonry walls
/J-value cavity
NA
R-0
R-0
/J-value continuous
R-0
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ([/-factor)
1
Slab or below-grade wall (/?-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(/■factor
0.6
Any
0.25 < PF < 0.50
0.7
Any
PF > 0.50
Any
Any
Roof assemblies (JJ-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
X
R-17
Floors over outdoor air or unconditioned space (/J-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-4
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
/J-value cavity
NA
R-ll
R-ll
/J-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/J-value cavity
NA
R-0
R-0
/J-value continuous
R-0
R-0
R-0
Other masonry walls
/J-value cavity
NA
R-ll
R-ll
/J-value continuous
R-5
R-0
R-0
(continued)
m
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(13)— continued
BUILDING ENVELOPE REQUIREMENTS 3 throu S n e - CLIMATE ZONE 4b
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
1
Slab or below-grade wall (/{-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
W-factor
0.4
0.7
0.25 < PF < 0.50
0.5
0.7
PF > 0.50
0.6
0.7
Moof assemblies (A-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
X
R-17
Floors over outdoor air or unconditioned space (J7-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-4
Above-grade walls (/f -value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (I/-factor)
1
Slab or below-grade wall (/{-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(Afactor
0.4
0.7
0.25 <PF< 0.50
0.5
0.7
PF > 0.50
0.6
0.7
Roof assemblies (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
R-30
R-17
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-4
Metal joist/truss
R-ll
R-4
Concrete slab or deck
NA
R-4
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-ll
/{-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An /{-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
95
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(14)
BUILDING ENVELOPE REQUIREMENTS 3 tnrou 9 n e - CLIMATE ZONE 5a
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (U-t actor)
1
Slab or below-grade wall (It-value)
R-0
Windows and glass doors
PF<0.25
SHGC
(/■factor
Any
Any
0.25 <PF< 0.50
Any
Any
PF > 0.50
Any
Any
Roof assemblies (if-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-15
Concrete slab or deck
NA
R-14
Metal purlin with thermal block
R-25
R-15
Metal purlin without thermal block
X
R-15
Floors over outdoor air or unconditioned space (if-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-5
Metal joist/truss
R-ll
R-6
Concrete slab or deck
NA
R-5
Above-grade walls (R -value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-ll
R-ll
R- value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-0
R-0
R- value continuous
R-0
R-0
R-0
Other masonry walls
Rvalue cavity
NA
R-0
R-0
R- value continuous
R-0
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (£/-factor)
1
Slab or below-grade wall (R-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(/■factor
0.6
Any
0.25 < PF < 0.50
0.7
Any
PF > 0.50
Any
Any
Roof assemblies (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
X
R-17
Floors over outdoor air or unconditioned space (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-5
Metal joist/truss
R-ll
R-6
Concrete slab or deck
NA
R-5
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-ll
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/?-value cavity
NA
R-0
R-0
i?-value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
(continued)
96
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COWiWiERCIAL BUILDING
TABLE 802.2(14)— continued
BUILDING ENVELOPE REQUIREMENTS 3 throu 9 he - CLIMATE ZONE 5a
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (l/-f actor)
1
Slab or below-grade wall (/{-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-facfor
0.5
0.7
0.25 < PF < 0.50
0.6
0.7
PF > 0.50
0.7
0.7
Roof assemblies (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
X
R-17
Floors over outdoor air or unconditioned space (J?-vatae)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-5
Metal joist/truss
R-ll
R-6
Concrete slab or deck
NA
R-5
Above-grade walls (A-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
ft-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
Other masonry walls
R -value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
1
Slab or below-grade wall (It-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(Mactor
0.4
0.7
0.25 < PF < 0.50
0.5
0.7
PF > 0.50
0.7
0.7
Roof assemblies (i?-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
R-30
R-17
Floors over outdoor air or unconditioned space (ff-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-5
Metal joist/truss
R-ll
R-6
Concrete slab or deck
NA
R-5
Above-grade walls (17-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
Other masonry walls
/?-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An /{-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
97
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(15)
BUILDING ENVELOPE REQUIREMENTS 3 throu 9 h e - CLIMATE ZONE 5b
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
1
Slab or below-grade wall (ff-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
LMacfor
Any
Any
0.25 < PF < 0.50
Any
Any
PF>0.50
Any
Any
Roof assemblies (i?-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-15
Concrete slab or deck
NA
R-14
Metal purlin with thermal block
R-25
R-15
Metal purlin without thermal block
X
R-15
Floors over outdoor air or unconditioned space (ff-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-5
Metal joist/truss
R-ll
R-6
Concrete slab or deck
NA
R-5
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
ft-value cavity
NA
R-ll
R-ll
/?-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-0
R-0
S-value continuous
R-0
R-0
R-0
Other masonry walls
fl-value cavity
NA
R-0
R-0
R- value continuous
R-0
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
1
Slab or below-grade wall (/f-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.6
Any
0.25 < PF < 0.50
0.7
Any
PF > 0.50
Any
Any
Moof assemblies (iJ-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-5
Metal joist/truss
R-ll
R-6
Concrete slab or deck
NA
R-5
Above-grade walls (ff-value)
Framed
No framing
Metal framing
Wood framing
/J-value cavity
NA
R-ll
R-ll
ft- value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-ll
R-ll
V?-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
(continued)
98
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(1 5)— continued
BUILDING ENVELOPE REQUIREMENTS 3 throu9h e - CLIMATE ZONE 5b
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (V -factor)
1
Slab or below-grade wall (ff -value)
R-0
Windows and glass doors
PF < 0.25
SHGC
W-factor
0.4
0.7
0.25 < PF < 0.50
0.5
0.7
PF > 0.50
0.6
0.7
Moof assemblies (fi-valne)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (S-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-5
Metal joist/truss
R-ll
R-6
Concrete slab or deck
NA
R-5
Above-grade walls (S-value)
Framed
No framing
Metal framing
Wood framing
S-value cavity
NA
R-ll
R-ll
fi-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
fi-value cavity
NA
R-ll
R-ll
S-value continuous
R-5
R-0
R-0
Other masonry walls
S-value cavity
NA
R-ll
R-ll
S-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (17-factor)
1
Slab or below-grade wall (S-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
W-factor
0.4
0.7
0.25 < PF < 0.50
0.5
0.7
PF > 0.50
0.6
0.7
Roof assemblies (S-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
R-38
R-20
Floors over outdoor air or unconditioned space (S-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-5
Metal joist/truss
R-ll
R-6
Concrete slab or deck
NA
R-5
Above-grade walls (S-value)
Framed
No framing
Metal framing
Wood framing
S-value cavity
NA
R-13
R-ll
R-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
S-value cavity
NA
R-ll
R-ll
S-value continuous
R-5
R-0
R-0
Other masonry walls
S-value cavity
NA
R-ll
R-ll
S-value continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An S-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(16)
BUILDING ENVELOPE REQUIREMENTS 3 * rou 9 h e - CLIMATE ZONE 6a
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (ff-value)
R-0
Windows and glass doors
PF<0.25
SHGC
U-factor
Any
Any
0.25 < PF < 0.50
Any
Any
PF > 0.50
Any
Any
Roof assemblies (ff-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-10
Metal joist/truss
R-13
R-ll
Concrete slab or deck
NA
R-10
Metal purlin with thermal block
R-19
R-ll
Metal purlin without thermal block
R-25
R-ll
Floors over outdoor air or unconditioned space (if-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-7
Metal joist/truss
R-ll
R-8
Concrete slab or deck
NA
R-7
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (R-value)
R-0
Windows and glass doors
PF<0.25
SHGC
(Afactor
0.7
Any
0.25 <PF< 0.50
Any
Any
PF>0.50
Any
Any
Roof assemblies (if-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (X-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-7
Metal joist/truss
R-ll
R-8
Concrete slab or deck
NA
R-7
Above-grade walls (if-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-0
R-0
/{-value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
(continued)
100
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(1 6)-^CQrrtinued
BUILDING ENVELOPE REQUIREMENTS 3 throu s h e - CLIMATE ZONE 6a
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (U-factor)
0.8
Slab or below-grade wall (if-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.5
0.7
0.25 <PF< 0.50
0.6
0.7
PF>0.50
0.7
0.7
Roof assemblies (Jf -value)
AH- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (it-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-7
Metal joist/truss
R-Il
R-8
Concrete slab or deck
NA
R-7
Above-grade walls (tf -value)
Framed
No framing
Metal framing
Wood framing
K-value cavity
NA
R-ll
R-ll
/?-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
fl-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
/?-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREAT
ER THAN 50 PE
RCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (17-factor)
1
Slab or below-grade wall (K-value)
R-0
Windows and glass doors
PF<0.25
SHGC
(/-factor
0.4
0.7
0.25 < PF < 0.50
0.5
0.7
PF>0.50
0.7
0.7
Moof assemblies (if-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
R-38
R-20
Floors over outdoor air or unconditioned space (ii-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-7
Metal joist/truss
R-ll
R-8
Concrete slab or deck
NA
R-7
Above-grade walls (J?-value)
Framed
No framing
Metal framing
Wood framing
W-value cavity
NA
R-13
R-ll
/r-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
/?-value cavity
NA
R-0
R-0
/f-value continuous
R-0
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/?-value continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An /J-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
101
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(17)
BUILDING ENVELOPE REQUIREMENTS 3 ,hrou 9 h e ■ CLIMATE ZONE 6b
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (E/-f actor)
1
Slab or below-grade wall (if -value)
R-0
Windows and glass doors
PF < 0.25
SHGC
{/-factor
Any
Any
0.25 < PF < 0.50
Any
Any
PF > 0.50
Any
Any
Roof assemblies (J? -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
X
R-17
Floors over outdoor air or unconditioned space (S-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-6
Metal joist/truss
R-ll
R-6
Concrete slab or deck
NA
R-6
Above-grade walls (/(-value)
Framed
No framing
Metal framing
Wood framing
/(-value cavity
NA
R-ll
R-ll
/(-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/(-value cavity
NA
R-0
R-0
/(-value continuous
R-0
R-0
R-0
Other masonry walls
/(-value cavity
NA
R-0
R-0
/(-value continuous
R-0
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (l/-factor)
1
Slab or below-grade wall (/(-value)
R-0
Windows and glass doors
PF<0.25
SHGC
U-factor
0.6
Any
0.25 <PF< 0.50
0.7
Any
PF>0.50
Any
Any
Roof assemblies (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
X
R-17
Floors over outdoor air or unconditioned space (/(-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-6
Metal joist/truss
R-ll
R-6
Concrete slab or deck
NA
R-6
Above-grade walls (/(-value)
Framed
No framing
Metal framing
Wood framing
/(-value cavity
NA
R-ll
R-ll
/(-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/(-value cavity
NA
R-0
R-0
/(-value continuous
R-0
R-0
R-0
Other masonry walls
/(-value cavity
NA
R-ll
R-ll
/(-value continuous
R-5
R-0
R-0
(continued)
102
2003 INTERNATIONAL ENERGY CONSERVATION CODE 18
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(17)— continued
ENVELOPE REQUIREMENTS 3 throu 3 h e -
rezc
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ((/-factor)
1
Slab or foelow-grade wall (i?-value)
R-0
Windows and glass doors
PF<0.25
S-IGC
M-factor
0.5
0.7
0.25 < PF < 0.50
0.6
0.7
PF>0.50
0.7
0.7
Roof assemblies (R- value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (jff-valoe)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-6
Metal joist/truss
R-ll
R-6
Concrete slab or deck
NA
R-6
Above-grade walls (R -value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-ll
R-ll
S-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
fl-value cavity
NA
R-0
R-0
/?-value continuous
R-0
R-0
R-0
Other masonry walls
R- value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (17-factor)
1
Slab or below-grade wall (K-varue)
R-0
Windows and glass doors
PF < 0.25
SHGC
IMactor
0.4
0.7
0.25 < PF < 0.50
0.5
0.7
PF > 0.50
0.7
0.7
Roof assemblies (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
R-38
R-20
Floors over outdoor air or unconditioned space (J? -value)
All-wood joist/truss
Insulation between framing
Continueous Insulation
R-ll
R-6
Metal joist/truss
R-ll
R-6
Concrete slab or deck
NA
R-6
Above-grade walls (ff-value)
Framed
No framing
Metal framing
Wood framinq
lvalue cavity
NA
R-ll
R-ll
S-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-0
R-0
S-value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An /(-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
103
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(18)
BUILDING ENVELOPE REQUIREMENTS 15 ,f,rou 9 h ' ■ CLIMATE ZONE 7a
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (/{-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(/■factor
Any
Any
0.25 < PF < 0.50
Any
Any
PF > 0.50
Any
Any
Roof assemblies (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-15
Concrete slab or deck
NA
R-14
Metal purlin with thermal block
R-25
R-15
Metal purlin without thermal block
X
R-15
Floors over outdoor air or unconditioned space (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-8
Metal joist/truss
R-ll
R-9
Concrete slab or deck
NA
R-8
Above-grade walls (R -value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-ll
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (l/-factor)
0.8
Slab or below-grade wall (R-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(Afactor
0.5
0.7
0.25 < PF < 0.50
0.6
0.7
PF > 0.50
0.7
0.7
Roof assemblies (if- value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (R-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-8
Metal joist/truss
R-ll
R-9
Concrete slab or deck
NA
R-8
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-ll
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
(continued)
104
2003 INTERNATIONAL ENERGY CONSERVATION CODE*
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(18)— continued
G ENVELOPE REQUIREMENTS" throu 9 hf - CLIMATE ZONE 7a
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (/{-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
lAfactor 3
0.4
0.7
0.25 S PF < 0.50
0.5
0.7
PF>0.50
0.6
0.7
Roof assemblies (R -value)
All-wood joist/truss
Metal joist/truss
Insulation between framing
Continuous insulation
R-25
R-25
R-19
R-20
Concrete slab or. deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (it-value)
All-wood joist/truss
Metal joist/truss
Concrete slab or deck
Insulation between framing
Continuous insulation
R-ll
R-ll
NA
R-8
R-9
R-8
Above-grade walls (/t-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
/{-value continuous
NA
NA
R-ll
R-0
R-ll
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
/{-value continuous
NA
R-5
R-ll
R-0
R-ll
R-0
Other masonry walls
/{-value cavity
/{-value continuous
NA
R-5
R-ll
R-0
R-ll
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (l/-factor)
0.8
Slab or below-grade wai (^f-value)
R-0
Windows and glass doors
PF<0.25
SHGC
U-factor
0.3
0.7
0.25 < PF < 0.50
0.4
0.7
PF > 0.50
0.5
0.7
Roof assemblies (tf -value)
All- wood joist/truss
Metal joist/truss
Concrete slab or deck
Insulation between framing
Continuous insulation
R-25
R-25
NA
R-19
R-20
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
R-38
R-20
Floors over outdoor air or unconditioned space (Jt-value)
All-wood joist/truss
Metal joist/truss
Concrete slab or deck
Insulation between framing
Continuous insulation
R-ll
R-ll
NA
R-8
R-9
R-8
Above-grade walls (Jf-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
/{-value continuous
NA
NA
R-ll
R-0
R-ll
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
/{-value continuous
NA
R-5
R-ll
R-0
R-ll
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. For buildings over three stories in height, the maximum ^/-factor shall be 0.60.
b. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
"NA" indicates the condition is not applicable.
An /{-value of zero indicates no insulation is required.
"Any" indicates any available product will comply.
"X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
05
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(19)
BUILDING ENVELOPE REQUIREMENTS 15 tnrou 9 hf - CLIMATE ZONE 7b
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (S-value)
R-0
Windows and glass doors
PF<0.25
SHGC
(/■factor
Any
Any
0.25 <PF< 0.50
Any
Any
PF>0.50
Any
Any
Roof assemblies (S-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-15
Concrete slab or deck
NA
R-14
Metal purlin with thermal block
R-25
R-15
Metal purlin without thermal block
X
R-15
Floors over outdoor air or unconditioned space (S-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-7
Metal joist/truss
R-ll
R-8
Concrete slab or deck
NA
R-8
Above-grade walls (S-value)
Framed
No framing
Metal framing
Wood framing
S-value cavity
NA
R-ll
R-ll
S-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-0
R-0
S-value continuous
R-0
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
S-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (i?-vahie)
R-0
Windows and glass doors
PF<0.25
SHGC
Ofactor
0.5
0.7
0.25 < PF < 0.50
0.6
0.7
PF>0.50
0.7
0.7
Roof assemblies (S-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (S-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-7
Metal joist/truss
R-ll
R-8
Concrete slab or deck
NA
R-8
Above-grade walls (S-value)
Framed
No framing
Metal framing
Wood framing
S-value cavity
NA
R-ll
R-ll
S-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
S-value cavity
NA
R-ll
R-ll
S-value continuous
R-5
R-0
R-0
Other masonry walls
S-value cavity
NA
R-ll
R-ll
S-value continuous
R-5
R-0
R-0
(continued)
108
2003 INTERNATIONAL ENERGY CONSERVATION CODE 18
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(19) — continued
BUILDING ENVELOPE REQUIREMENTS" throu 9 h ' - CLIMATE ZONE 7b
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (A-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
{/■factor 3
0.4
0.7
0.25 < PF < 0.50
0.5
0.7
PF>0.50
0.6
0.7
Roof assemblies (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-7
Metal joist/truss
R-ll
R-8
Concrete slab or deck
NA
R-8
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
Rvalue cavity
NA
R-13
R-13
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-13
R-ll
R-value continuous
R-6
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (17-factor)
0.8
Slab or below-grade wall (R-value)
R-0
Windows and glass doors
PF<0.25
SHGC
y-factor
0.3
0.7
0.25 < PF < 0.50
0.4
0.7
PF>0.50
0.5
0.7
Roof assemblies (R-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
R-38
R-20
Floors over outdoor air or unconditioned space (R-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-7
Metal joistAruss
R-ll
R-8
Concrete slab or deck
NA
R-8
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-13
R-13
R-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-13
R-ll
R-value continuous
R-6
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. For buildings over three stories in height, the maximum {/-factor shall be 0.60.
b. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
c. "NA" indicates the condition is not applicable.
d. An R-value of zero indicates no insulation is required.
e. "Any" indicates any available product will comply.
f. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
107
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(20)
BUILDING ENVELOPE REQUIREMENTS 3 ,hrou 9 h e - CLIMATE ZONE 8
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ([/-factor)
0.8
Slab or below-grade wall (/{-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(Afactor
Any
Any
0.25 < PF < 0.50
Any
Any
PF> 0.50
Any
Any
Roof assemblies (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-15
Concrete slab or deck
NA
R-14
Metal purlin with thermal block
R-25
R-15
Metal purlin without thermal block
X
R-15
Floors over outdoor air or unconditioned space (if -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-9
Metal joist/truss
R-ll
R-10
Concrete slab or deck
NA
R-9
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-ll
R-ll
/f-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ([/-factor)
0.8
Slab or below-grade wall (/{-value)
R-0
Windows and glass doors
PF<0.25
SHGC
U-factor
0.5
0.7
0.25 < PF < 0.50
0.6
0.7
PF > 0.50
0.7
0.7
Roof assemblies (/{-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (i{ -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-9
Metal joist/truss
R-ll
R-10
Concrete slab or deck
NA
R-9
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-13
R-ll
/{-value continuous
R-6
R-0
R-0
(continued)
108
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COI
TABLE 802.2(20) — continued
3U1LD1NG ENVELOPE REQUIREMENTS 3 throu 9 h e ■
re ZONE 8
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ((/-factor)
0.8
Slab or below-grade wall (U-vahie)
R-0
Windows and glass doors
PF < 0.25
SHGC
Iffactor
0.4
0.5
0.25 < PF < 0.50
0.5
0.5
PF > 0.50
0.6
0.5
Roof assemblies (J?- value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-9
Metal joist/truss
R-ll
R-10
Concrete slab or deck
NA
R-9
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-ll
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-13
R-ll
/{-value continuous
R-6
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ((/-factor)
0.8
Slab or below-grade wall (ff -value)
R-0
Windows and glass doors
PF < 0.25
SHGC
y-facfor
0.3
0.5
0.25 < PF < 0.50
0.4
0.5
PF > 0.50
0.5
0.5
Roof assemblies (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
R-38
R-20
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-ll
R-9
Metal joistytruss
R-ll
R-10
Concrete slab or deck
NA
R-9
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-ll
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
S-value cavity
NA
R-13
R-ll
R-value continuous
R-6
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2( 1 ) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An /{-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(21)
BUILDING ENVELOPE REQUIREMENTS 6 bought. CLIMATE ZONE 9a
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ([/-factor)
0.8
Slab or below-grade wall (S-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
IMactor
Any
Any
0.25 < PF < 0.50
Any
Any
PF > 0.50
Any
Any
Roof assemblies (R -value)
All-wood joist/truss
L Insulation between framing
Continuous insulation
R-19
R-13
Metal joist/truss
R-19
R-14
Concrete slab or deck
NA
R-13
Metal purlin with thermal block
R-19
R-14
Metal purlin without thermal block
X
R-14
Floors over outdoor air or unconditioned space (S-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-13
R-12
Metal joist/truss
R-13
R-12
Concrete slab or deck
NA
R-12
Above-grade walls (S-value)
Framed
No framing
Metal framing
Wood framing
S-value cavity
NA
R-ll
R-ll
S-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/?-value cavity
NA
R-0
R-0
S-value continuous
R-0
R-0
R-0
Other masonry walls
S-value cavity
NA
R-ll
R-ll
S-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ([/-factor)
0.8
Slab or below-grade wall (S-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
Any
0.7
0.25 < PF < 0.50
Any
0.7
PF > 0.50
Any
0.7
Roof assemblies (S-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
X
R-17
Floors over outdoor air or unconditioned space (R -value)
AU-wood joist/truss
Insulation between framing
Continuous insulation
R-13
R-12
Metal joist/truss
R-13
R-12
Concrete slab or deck
NA
R-12
Above-grade walls (S-value)
Framed
No framing
Metal framing
Wood framing
R- value cavity
NA
R-ll
R-ll
S-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/?-value cavity
NA
R-ll
R-ll
S-value continuous
R-5
R-0
R-0
Other masonry walls
S-value cavity
NA
R-ll
R-ll
S-value continuous
R-5
R-0
R-0
(continued)
110
2003 INTERNATIONAL ENERGY CONSERVATION CODE B
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(21) — continued
REQUIREMENTS" thr °"9 hf - CLIR
lATE ZONE 9a
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (I/-factor)
0.8
Slab or below-grade wall (Jt-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor 8
0.6
0.7
0.25 < PF < 0.50
0.7
0.7
PF > 0.50
Any
0.7
Roof assemblies (ff-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (i?-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-13
R-12
Metal joist/truss
R-13
R-12
Concrete slab or deck
NA
R-12
Above-grade walls (Jf -value)
Framed
No framing
Metal framing
Wood framing
/f-value cavity
NA
R-13
R-ll
/f-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/f-value cavity
NA
R-ll
R-ll
/f-value continuous
R-5
R-0
R-0
Other masonry walls
/f-value cavity
NA
R-ll
R-ll
/f-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (/f-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.5
0.5
0.25 < PF < 0.50
0.7
0.5
PF > 0.50
0.8
0.5
Roof assemblies (i?-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
R-38
R-20
Floors over outdoor air or unconditioned space (if-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-13
R-12
Metal joist/truss
R-13
R-12
Concrete slab or deck
NA
R-12
Above-grade walls CR-value)
Framed
No framing
Metal framing
Wood framing
/f-value cavity
NA
R-13
R-13
/f-value continuous
NA
R-ll
R-5
CMU, > 8 inches, with integral insulation
/f-value cavity
NA
R-ll
R-ll
/f-value continuous
R-5
R-0
R-0
Other masonry walls
/f-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. For buildings over three stories in height, the maximum [/-factor shall be 0.60.
b. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
"NA" indicates the condition is not applicable.
An /f-value of zero indicates no insulation is required.
"Any" indicates any available product will comply.
"X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
111
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(22)
BUILDING ENVELOPE REQUIREMENTS 3 ,hrou 9 h e ■
CLIMATE ZONE 9b
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (/{-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(/-factor
Any
Any
0.25 <PF< 0.50
Any
Any
PF>0.50
Any
Any
Roof assemblies (A-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-15
Metal joist/truss
R-19
R-16
Concrete slab or deck
NA
R-15
Metal purlin with thermal block
R-25
R-16
Metal purlin without thermal block
X
R-16
Floors over outdoor air or unconditioned space (/{-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-13
R-ll
Metal joist/truss
R-13
R-12
Concrete slab or deck
NA
R-12
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (17-factor)
0.8
Slab or below-grade wall (/{-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(/■factor
0.5
0.5
0.25 < PF < 0.50
0.6
0.5
PF > 0.50
0.7
0.5
Roof assemblies (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-13
R-ll
Metal joist/truss
R-13
R-12
Concrete slab or deck
NA
R-12
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
(continued)
112
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
_E 802.2(22) — continued
BUILDING ENVELOPE REQUIREMENTS 3 throu 9 h e - CLIMATE ZONE 9b
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (17-factor)
0.8
Slab or below-grade wall (H-value)
R-0
Windows and glass doors
PF<0.25
SHGC
U-factor
0.4
0.5
0.25 <PF< 0.50
0.5
0.5
PF > 0.50
0.6
0.5
Roof assemblies (J?-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (X-valiie)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-13
R-ll
Metal joist/truss
R-13
R-12
Concrete slab or deck
NA
R-12
Above-grade walls (S-value)
Framed
No framing
Metal framing
Wood framing
/?-value cavity
NA
R-13
R-ll
ft-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/J-value cavity
NA
R-ll
R-ll
fl-value continuous
R-5
R-0
R-0
Other masonry walls
U-value cavity
NA
R-13
R-ll
R-value continuous
R-6
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (^/-factor)
0.8
Slab or below-grade wall (U-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.3
0.5
0.25 < PF < 0.50
0.4
0.5
PFS0.50
0.5
0.5
Roof assemblies (/(-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
R-38
R-20
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-13
R-ll
Metal joist/truss
R-13
R-12
Concrete slab or deck
NA
R-12
Above-grade walls (ff-vatae)
Framed
No framing
Metal framing
Wood framing
lvalue cavity
NA
R-13
R-13
R-value continuous
NA
R-5
R-3
CMU, > 8 inches, with integral insulation
J?-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
R- value cavity
NA
R-13
R-ll
R-value continuous
R-6
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An if-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
513
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(23)
BUILDING ENVELOPE REQUIREMENTS 3 throu 9 h e - CLIMATE ZONE 10a
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (f-factor)
0.8
Slab or below-grade wall (R-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
{/-factor
Any
Any
0.25 < PF < 0.50
Any
Any
PF>0.50
Any
Any
Roof assemblies {R -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-15
Concrete slab or deck
NA
R-14
Metal purlin with thermal block
R-25
R-15
Metal purlin without thermal block
X
R-15
Floors over outdoor air or unconditioned space (if -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-13
Metal joist/truss
R-19
R-13
Concrete slab or deck
NA
R-13
Above-grade walls (iJ-value)
Framed
No framing
Metal framing
Wood framing
i?-value cavity
NA
R-ll
R-ll
lvalue continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
ff-value cavity
NA
R-0
R-0
R-value continuous
R-0
R-0
R-0
Other masonry walls
i?-value cavity
NA
R-ll
R-ll
S-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (S-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
O-factor
0.6
0.7
0.2 < PF < 0.50
0.7
0.7
PF > 0.50
Any
0.7 .
Roof assemblies (if -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
X
R-17
Floors over outdoor air or unconditioned space (i?-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-13
Metal joist/ truss
R-19
R-13
Concrete slab or deck
NA
R-13
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
Rvalue cavity
NA
R-ll
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-ll
R-ll
i?-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
(continued)
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BU1LD1MG
TABLE 802.2(23) — continued
WELOPE REQUIREMENTS 3 throu 9 he . CL1
]ATE ZONE 10a
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (f/-factor)
0.8
Slab or below-grade wall (J? -value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.5
0.6
0.25 < PF < 0.50
0.6
0.6
PF > 0.50
0.7
0.6
Roof assemblies (i?-value)
All-wood joist/truss
Metal joist/truss
Concrete slab or deck
Insulation between framing
Continuous insulation
R-25
R-25
NA
R-19
R-20
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (R-value)
All-wood joist/truss
Metal joist/truss
Concrete slab or deck
Insulation between framing
Continuous insulation
R-19
R-19
NA
R-13
R-13
R-13
Above-grade walls (i?-value)
Framed
No framing
Metal framing
Wood framing
i?-value cavity
/J-value continuous
NA
NA
R-ll
R-0
R-ll
R-0
CMU, > 8 inches, with integral insulation
ff-value cavity
NA
R-ll
R-ll
fl-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
ft-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (/{-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(^factor
0.5
0.4
0.25 < PF < 0.50
0.6
0.4
PF > 0.50
[_ 0.7
0.4
Roof assemblies (l?-value)
All-wood joist/truss
Metal joist/truss
Concrete slab or deck
Insulation between framing j
Continuous insulation
R-25
R-25
NA
R-19
R-20
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
R-30
R-20
Floors over outdoor air or unconditioned space (fi-value)
All-wood joist/truss
Metal joist/truss
Concrete slab or deck
Insulation between framing
Continuous insulation
R-19
R-19
NA
R-13
R-13
R-13
Above-grade walls (it-value)
Framed
No framing
Metal framing
Wood framing
fl-value cavity
lvalue continuous
NA
NA
R-13
R-3
R-ll
R-0
CMU, > 8 inches, with integral insulation
ft-value cavity
R-value continuous
NA
R-5
R-ll
R-0
R-ll
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/?-value continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An S-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
115
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(24)
BUILDING ENVELOPE REQUIREMENTS 3 throu 9 h e - CLIMATE ZONE 10b
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITIONWALUE
Skylights ((/-factor)
0.8
Slab or below-grade wall (/J-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
lAfactor
Any
Any
0.25 < PF < 0.50
Any
Any
PF > 0.50
Any
Any
Roof assemblies (R- value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-17
Metal joist/truss
R-25
R-18
Concrete slab or deck
NA
R-17
Metal purlin with thermal block
R-30
R-18
Metal purlin without thermal block
X
R-18
Floors over outdoor air or unconditioned space (/J-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-12
Metal joist/truss
R-19
R-13
Concrete slab or deck
NA
R-13
Above-grade walls (/f-value)
Framed
No framing
Metal framing
Wood framing
/?-value cavity
NA
R-ll
R-ll
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (fJ-factor)
0.8
Slab or below-grade wall (/{-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
L'-factor
0.5
0.6
0.25 < PF < 0.50
0.6
0.6
PF > 0.50
0.7
0.6
Roof assemblies (/?- value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (if -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-12
Metal joist/truss
R-19
R-13
Concrete slab or deck
NA
R-13
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
(continued)
116
2003 INTERNATIONAL ENERGY CONSERVATION CODE"
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(24)— corrtinyed
/ELOPE R£QU!R£iVSENTS athrou 9 he - CLIMATE ZONE 10b
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (//-factor)
0.8
Slab or below-grade wall (it-value)
R-0
Windows and glass doors
PF<0.25
SHGC
U-factor
0.4
0.5
0.25 <PF< 0.50
0.5
0.5
PF > 0.50
0.6
0.5
Roof assemblies (K-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (ii-vatae)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-12
Metal joist/truss
R-19
R-13
Concrete slab or deck
NA
R-13
Above-grade walls (if-vatae)
Framed
No framing
Metal framing
Wood framing
Rvalue cavity
NA
R-ll
R-ll
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/?-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (I/-factor)
0.8
Slab or below-grade wall (/J-vafae)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-facfor
0.3
0.5
0.25 < PF < 0.50
0.4
0.5
PF > 0.50
0.5
0.5
Roof assemblies (if -value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
R-30
R-20
Floors over outdoor air or unconditioned space (ff -value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-12
Metal joist/truss
R-19
R-13
Concrete slab or deck
NA
R-13
Above-grade walls (U-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An /{-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 8NTERNATIQNAL ENERGY CONSERVATION CODE®
117
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(25)
BUILDING ENVELOPE REQUIREMENTS 3 ,hrou 9 he - CLIMATE ZONE 11a
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (/{-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
Any
Any
0.25 < PF < 0.50
Any
Any
PF > 0.50
Any
Any
Roof assemblies (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-15
Concrete slab or deck
NA
R-14
Metal purlin with thermal block
R-25
R-15
Metal purlin without thermal block
X
R-15
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-14
Concrete slab or deck
NA
R-14
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (17-factor)
0.8
Slab or below-grade wall (/{-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.6
0.7
0.25 < PF < 0.50
0.7
0.7
PF > 0.50
Any
0.7
Roof assemblies (J?- value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
X
R-17
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-14
Concrete slab or deck
NA
R-14
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-ll
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
(continued)
118
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(25)— continued
BUILDING ENVELOPE REQUIREMENTS 8 ,hrou 9 h e - CLIMATE ZONE 1 1 a
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ((/-factor)
0.8
Slab or below-grade wall (fl-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(Afactor
0.5
0.6
0.25 < PF < 0.50
0.6
0.6
PF > 0.50
0.7
0.6
Roof assemblies (A-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (J?-vaIue)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-14
Concrete slab or deck
NA
R-14
Above-grade walls (K-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-ll
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (J?-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
lAfacfor
0.5
0.4
0.25 < PF < 0.50
0.6
0.4
PF>0.50
0.7
0.4
Roof assemblies (/{-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
R-30
R-20
Floors over outdoor air or unconditioned space (It-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-14
Concrete slab or deck
NA
R-14
Above-grade walls (R -value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-13
R-ll
Rvalue continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An R-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
119
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDIMGS
TABLE 802.2(26)
BUILDING ENVELOPE REQUIREMENTS 3 throu9he - CLIMATE ZONE 11b
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ([/-factor)
0.8
Slab or below-grade wall (R-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
IMactor
Any
Any
0.25 < PF < 0.50
Any
Any
PF > 0.50
Any
Any
Roof assemblies (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-18
Metal joist/truss
R-25
R-19
Concrete slab or deck
NA
R-18
Metal purlin with thermal block
R-30
R-19
Metal purlin without thermal block
X
R-19
Floors over outdoor air or unconditioned space (A -value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-15
Concrete slab or deck
NA
R-15
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
/?- value cavity
NA
R-ll
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (R-value)
R-0
Windows and glass doors
PF<0.25
SHGC
IMactor
0.5
0.6
0.25 <PF< 0.50
0.6
0.6
PF>0.50
0.7
0.6
Roof assemblies (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-15
Concrete slab or deck
NA
R-15
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-ll
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
Rvalue continuous
R-5
R-0
R-0
(continued)
120
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(26) — cooiinyed
BUILDING ENVELOPE REQUIREMENTS 3 ,hrou 9 h e - CLIMATE ZONE 1 1 b
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ((/-factor)
0.8
Slab or below-grade wall (A-value)
R-8
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.4
0.5
0.25 <PF< 0.50
0.5
0.5
PF > 0.50
0.6
0.5
Roof assemblies (K-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
X
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (fl-vatae)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-15
Concrete slab or deck
NA
R-15
Above-grade walls (J?-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-ll
R-ll
fl-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
fl-value cavity
NA
R-ll
R-ll
ff-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
/?-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ((/-factor)
0.8
Slab or below-grade wall (i?-value)
R-8
Windows and glass doors
PF < 0.25
SHGC
(Afactor
0.3
0.5
0.25 < PF < 0.50
0.4
0.5
PF>0.50
0.5
0.5
Roof assemblies (R -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
R-30
R-24
Metal purlin without thermal block
R-38
R-24
Floors over outdoor air or unconditioned space (it-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-15
Concrete slab or deck
NA
R-15
Above-grade walls (ff-value)
Framed
Mo framing
Metal framing
Wood framing
R-value cavity
NA
R-13
R-ll
/?-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
J?-value cavity
NA
R-ll
R-ll
/?-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
fl-value continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
"NA" indicates the condition is not applicable.
An R- value of zero indicates no insulation is required.
"Any" indicates any available product will comply.
"X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
121
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(27)
BUILDING ENVELOPE REQUIREMENTS 3 throu 9 he - CLIMATE ZONE 12a
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ([/-factor)
0.8
Slab or below-grade wall (J?-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
IMactor
Any
Any
0.25 < PF < 0.50
Any
Any
PF > 0.50
Any
Any
Roof assemblies (R-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
X
R-17
Floors over outdoor air or unconditioned space (if -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-19
R-16
Concrete slab or deck
NA
R-16
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-ll
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
Rvalue cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (f/-factor)
0.8
Slab or below-grade wall (R -value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.6
0.6
0.25 < PF < 0.50
0.7
0.6
PF > 0.50
Any
0.6
Roof assemblies (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-19
R-16
Concrete slab or deck
NA
R-16
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-ll
R-ll
R- value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-ll
R-ll
Rvalue continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
(continued)
122
2003 INTERNATIONAL ENERGY CONSERVATION CODE*
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
BLE 802.2(27) — continued
REQUIREMENTS 3 throu a h e - CLIMATE ZONE '
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (/{-value)
R-8
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.5
0.5
0.25 < PF < 0.50
0.6
0.5
PF > 0.50
0.7
0.5
Roof assemblies (Jc-vahie)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
X
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-19
R-16
Concrete slab or deck
NA
R-16
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-ll
R-ll
lvalue continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (U-Uctor)
0.8
Slab or below-grade wall (R-value)
R-8
Windows and glass doors
PF<0.25
SHGC
U-factor
0.4
0.4
0.25 < PF < 0.50
0.5
0.4
PF > 0.50
0.7
0.4
Roof assemblies (R-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
R-30
R-24
Metal purlin without thermal block
R-38
R-24
Floors over outdoor air or unconditioned space (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-19
R-16
Concrete slab or deck
NA
R-16
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-13
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
Rvalue continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An R-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
123
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(28)
BUILDING ENVELOPE REQUIREMENTS 3 throu 9 h e ■ CLIMATE ZONE 12b
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (t/-factor)
0.8
Slab or below-grade wall (/f-value)
R-0
Windows and glass doors
PF<0.25
SHGC
U-factor
Any
Any
0.25 < PF < 0.50
Any
Any
PF > 0.50
Any
Any
Roof assemblies (/f-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-16
Metal purlin with thermal block
R-25
R-17
Metal purlin without thermal block
X
R-17
Floors over outdoor air or unconditioned space (iff -value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-15
Metal joist/truss
R-19
R-16
Concrete slab or deck
NA
R-16
Above-grade walls (if -value)
Framed
No framing
Metal framing
Wood framing
i?-value cavity
NA
R-ll
R-ll
/f-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/f-value cavity
NA
R-ll
R-ll
/f-value continuous
R-5
R-0
R-0
Other masonry walls
/f-value cavity
NA
R-ll
Ft- 11
/f-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ((/-factor)
0.8
Slab or below-grade wall (i?-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.5
0.6
0.25 <PF< 0.50
0.6
0.6
PF > 0.50
0.7
0.6
Roof assemblies (/f-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (R -value)
All-wood joist/truss
insulation between framing
Continuous insulation
R-19
R-15
Metal joist/truss
R-19
R-16
Concrete slab or deck
NA
R-16
Above-grade walls (/f-value)
Framed
No framing
Metal framing
Wood framing
/f-value cavity
NA
R-ll
R-ll
/f-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/f-value cavity
NA
R-ll
R-ll
/f-value continuous
R-5
R-0
R-0
Other masonry walls
/f-value cavity
NA
R-ll
R-ll
/?-value continuous
R-5
R-0
R-0
(continued)
124
2003 INTERNATIONAL ENERGY CONSERVATION CODE 8
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(28)— continued
BUILDING ENVELOPE REQUIREMENTS 3 th,OU9he - CLIMATE ZC
<IE12fo
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (17-factor)
0.8
Slab or below-grade wall (A-value)
R-8
Windows and glass doors
PF < 0.25
SHGC
(/■factor
0.4
0.5
0.25 < PF < 0.50
0.5
0.5
PF > 0.50
0.6
0.5
Roof assemblies (S-vatae)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
X
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (jR-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-15
Metal joist/truss
R-19
R-16
Concrete slab or deck
NA
R-16
Above-grade walls (if -value)
Framed
No framing
iVIetsI framing
Wood framing
i?-value cavity
NA
R-ll
R-ll
/f-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
i?-value cavity
NA
R-ll
R-ll
S-value continuous
R-5
R-0
R-0
Other masonry walls
l?-value cavity
NA
R-ll
R-ll
S-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (Mactor)
0.8
Slab or below-grade wall (R -value)
R-8
Windows and glass doors
PF < 0.25
SHGC
W-factor
0.3
0.5
0.25 < PF < 0.50
0.4
0.5
PF>0.50
0.5
0.5
Roof assemblies (U-valoe)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
R-38
R-24
Metal purlin without thermal block
R-49
R-24
Floors over outdoor air or unconditioned space (S-vatae)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-15
Metal joist/truss
R-19
R-16
Concrete slab or deck
NA
R-16
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R- value cavity
NA
R-13
R-13
i?-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
/f-value cavity
NA
R-ll
R-ll
/?-value continuous
R-5
R-0
R-0
Other masonry walls
fl-value cavity
NA
R-ll
R-ll
i?-value continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An R- value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
125
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(29)
BUILDING ENVELOPE REQUIREMENTS 3 throu 9 h e - CLIMATE ZONE 13a
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITIOIWALUE
Skylights ([/-factor)
0.8
Slab or below-grade wall (R-vahie)
R-0
Windows and glass doors
PF < 0.25
SHGC
(Afactor
Any
0.7
0.25 < PF < 0.50
Any
0.7
PFS0.50
Any
0.7
Roof assemblies (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-14
Metal joist/truss
R-19
R-15
Concrete slab or deck
NA
R-14
Metal purlin with thermal block
R-25
R-15
Metal purlin without thermal block
X
R-15
Floors over outdoor air or unconditioned space (R-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-17
Above-grade walls (R -value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-13
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-o
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ([/-factor)
0.8
Slab or below-grade wall (R-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.6
0.6
0.25 < PF < 0.50
0.7
0.6
PF > 0.50
Any
0.6
Roof assemblies (R-value)
All-wood joist/truss
Insulation between framing ,
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-17
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-13
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
(continued)
126
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(29) — continued
BUILDING ENVELOPE REQUIREMENTS 3 throu 9 he - CLIMATE ZONE 13a
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ([/-factor)
0.8
Slab or foelow-grade wall (R-value)
R-8
Windows and glass doors
PF < 0.25
SHGC
{/-factor
0.5
0.5
0.25 < PF < 0.50
0.6
0.5
PF > 0.50
0.7
0.5
Roof assemblies (J? -value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
X
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (Jt-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-17
Above-grade walls (ff-value)
Framed
No framing
Metal framing
Wood framing
R- value cavity
NA
R-13
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
lvalue cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (A-value)
R-8
Windows and glass doors
PF < 0.25
SHGC
lAfactor
0.4
0.4
0.25 <PF< 0.50
0.5
0.4
PF > 0.50
0.7
0.4
Roof assemblies (A-vaDue)
All-wood joist/truss
Insulation between framing
Continuous Insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
R-30
R-24
Metal purlin without thermal block
R-38
R-24
Floors over outdoor air or unconditioned space (/{-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-16
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-17
Above-grade walls (fl-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-13
R-ll
R-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
"NA" indicates the condition is not applicable.
An /{-value of zero indicates no insulation is required.
"Any" indicates any available product will comply.
"X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE* 4
127
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(30)
BUILDING ENVELOPE REQUlREMENTS athrau 9 he - CLIMATE ZONE 13b
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (ft-value)
R-0
Windows and glass doors
PF < 0.25
SHGC
(/■factor
Any
Any
0.25 < PF < 0.50
Any
Any
PF > 0.50
Any
Any
Roof assemblies (/{-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-18
Metal joist/truss
R-25
R-19
Concrete slab or deck
NA
R-18
Metal purlin with thermal block
R-30
R-19
Metal purlin without thermal block
NA
R-19
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-17
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-17
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-ll
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/f-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (//-factor)
0.8
Slab or below-grade wall (R -value)
R-0
Windows and glass doors
PF<0.25
SHGC
(Afactor
0.5
0.5
0.25 <PF< 0.50
0.6
0.5
PF > 0.50
0.7
0.5
Roof assemblies (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (/{-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-17
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-17
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-ll
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
(continued)
128
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(30)— continued
BUILDING ENVELOPE REQUIREMENTS 3 throu 9 h e • CLIMATE ZONE 13b
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ([/-factor)
0.8
Slab or below-grade wall (/{-value)
R-8
Windows and glass doors
PF < 0.25
SHGC
W-factor
0.4
0.5
0.25 < PF < 0.50
0.5
0.5
PF > 0.50
0.6
0.5
Roof assemblies (R- value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
X
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (it-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-17
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-17
Above-grade walls (ff -value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-ll
/{-value continuous
NA
R-0
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/?-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ([/-factor)
0.8
Slab or below-grade wall (it-value)
R-8
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.4
0.4
0.25 < PF < 0.50
0.5
0.4
PF>0.50
0.6
0.4
Roof assemblies (ff -value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
R-38
R-24
Metal purlin without thermal block
R-49
R-24
Floors over outdoor air or unconditioned space (fi-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-17
Metal joist/truss
R-25
R-17
Concrete slab or deck
NA
R-17
Above-grade walls (/7-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-13
/{-value continuous
NA
R-7
R-3
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An /{-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(31)
BUILDING ENVELOPE REQUIREMENTS 3 through e . CLIMATE ZONE 14a
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (i?-value)
R-0
Windows and glass doors
PF<0,25
SHGC
iAfactor
Any
0.7
0.25 < PF < 0.50
Any
0.7
PF>0.50
Any
0.7
Roof assemblies (R- value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-19
R-17
Metal joist/truss
R-25
R-18
Concrete slab or deck
NA
R-17
Metal purlin with thermal block
R-30
R-18
Metal purlin without thermal block
X
R-18
Floors over outdoor air or unconditioned space (R -value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-18
Metal joist/truss
R-25
R-19
Concrete slab or deck
NA
R-19
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-13
R-ll
R-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
Rvalue cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-vatue continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (R -value)
R-8
Windows and glass doors
PF < 0.25
SHGC
iAfactor
0.5
0.6
0.25 < PF < 0.50
0.6
0.6
PF > 0.50
0.7
0.6
Roof assemblies (R-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-18
Metal joist/truss
R-25
R-19
Concrete slab or deck
NA
R-19
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-13
R-ll
R-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
(continued)
130
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(31) — continued
BUILDING ENVELOPE REQUIREMENTS 3 ,hrou 9 he - CLIMATE ZONE 14a
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (it -value)
R-8
Windows and glass doors
PF < 0.25
SHGC
{/■factor
0.4
0.5
0.25 < PF < 0.50
0.5
0.5
PF>0.50
0.6
0.5
Roof assemblies (if -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
X
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (it-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-18
Metal joist/truss
R-25
R-19
Concrete slab or deck
NA
R-19
Above-grade walls (It-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-13
R-ll
/t-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
/t-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
Other masonry walls
S-value cavity
NA
R-ll
R-ll
/t-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (it-value)
R-8
Windows and glass doors
PF < 0.25
SHGC
O-factor
0.4
0.4
0.25 < PF < 0.50
0.5
0.4
PF > 0.50
0.6
0.4
Roof assemblies (it-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
R-38
R-24
Metal purlin without thermal block
R-38
R-24
Floors over outdoor air or unconditioned space (it-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-18
Metal joist/truss
R-25
R-19
Concrete slab or deck
NA
R-19
Above-grade walls (it-value)
Framed
No framing
(Metal framing
Wood framing
/J-value cavity
NA
R-13
R-ll
it-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
/t-value cavity
NA
R-ll
R-ll
/t-value continuous
R-5
R-0
R-0
Other masonry walls
it-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An R- value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE s
131
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(32)
BUILDING ENVELOPE REQUIREMENTS 8 throu 9 h e - CLIMATE ZONE 14b
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (R-value)
R-0
Windows and glass doors
PF<0.25
SHGC
U-factor
Any
0.7
0.25 <PF< 0.50
Any
0.7
PF > 0.50
Any
0.7
Roof assemblies (R-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
NA
R-20
Floors over outdoor air or unconditioned space (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-19
Concrete slab or deck
NA
R-19
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-13
R-ll
lvalue continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-ll
R-ll
R- value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (R-value)
R-8
Windows and glass doors
PF < 0.25
SHGC
IMactor
0.5
0.5
0.25 <PF< 0.50
0.6
0.5
PF > 0.50
0.7
0.5
Roof assemblies (R -value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (R-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-19
Concrete slab or deck
NA
R-19
Above-grade walls (R-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-13
R-ll
R-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-ll
R-ll
R- value continuous
R-5
R-0
R-0
Other masonry walls
R-value cavity
NA
R-ll
R-ll
R-value continuous
R-5
R-0
R-0
(continued)
132
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(32)— continued
BUILDING ENVELOPE REQUIREMENTS 3 throu 9 h e - CLIMATE ZONE 14b
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (£/-f actor)
0.8
Slab or below-grade wall (R-value)
R-8
Windows and glass doors
PF<0.25
0.25 <PF< 0.50
PF > 0.50
SHGC
W-factor
0.4
0.5
0.6
0.5
0.5
0.5
Roof assemblies (R-value)
All-wood joist/truss
Metal joist/truss
Concrete slab or deck
Metal purlin with thermal block
Metal purlin without thermal block
Insulation between framing
Continuous insulation
R-30
R-30
NA
X
X
R-23
R-24
R-23
R-24
R-24
Floors over outdoor air or unconditioned space (R-value)
All-wood joist/truss
Metal joist/truss
Concrete slab or deck
Insulation between framing
Continuous insulation
R-25
R-25
NA
R-19
R-19
R-19
Above-grade walls (R-value)
Framed
Rvalue cavity
R-value continuous
CMU, > 8 inches, with integral insulation
R-value cavity
R-value continuous
Other masonry walls
R-value cavity
R-value continuous
No framing
Metal framing
Wood framing
NA
NA
NA
R-5
NA
R-5
R-13
R-3
R-ll
R-0
R-ll
R-0
R-ll
R-0
R-ll
R-0
R-ll
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.8
Slab or below-grade wall (R-value)
R-8
Windows and glass doors
PF<0.25
0.25 < PF < 0.50
PF > 0.50
SHGC
U-factor
0.4
0.5
0.6
0.4
0.4
0.4
Roof assemblies (R-value)
All- wood joist/truss
Metal joist/truss
Concrete slab or deck
Metal purlin with thermal block
Metal purlin without thermal block
Insulation between framing
Continuous insulation
R-30
R-30
NA
R-38
R-49
R-23
R-24
R-23
R-24
R-24
Floors over outdoor air or unconditioned space (R-value)
All- wood joist/truss
Metal joist/truss
Concrete slab or deck
Insulation between framing
Continuous insulation
R-25
R-25
NA
R-19
R-19
R-19
Above-grade walls (R-value)
Framed
R-value cavity
R-value continuous
CMU, > 8 inches, with integral insulation
R-value cavity
R-value continuous
Other masonry walls
R-value cavity
R-value continuous
No framing
Metal framing
Wood framing
NA
NA
NA
R-5
NA
R-5
R-13
R-7
R-ll
R-0
R-ll
R-0
R-13
R-3
R-ll
R-0
R-ll
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
"NA" indicates the condition is not applicable.
An R-value of zero indicates no insulation is required.
"Any" indicates any available product will comply.
"X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
133
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(33)
BUILDING ENVELOPE REQUIREMENTS 3 ^ rou 3 he - CLIMATE ZONE 15
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.6
Slab or below-grade wall (/{-value)
R-0
Windows and glass doors
PF<0.25
SHGC
(/-factor
Any
0.7
0.25 <PF< 0.50
Any
0.7
PF > 0.50
Any
0.7
Roof assemblies (/{-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (/{-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-22
Metal joist/truss
R-30
R-23
Concrete slab or deck
NA
R-22
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-ll
/{-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.6
Slab or below-grade wall (/{-value)
R-8
Windows and glass doors
PF<0.25
SHGC
U-factor
0.5
0.5
0.25 < PF < 0.50
0.6
0.5
PF>0.50
0.7
0.5
Roof assemblies (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/ truss
Insulation between framing
Continuous insulation
R-25
R-22
Metal joist/truss
R-30
R-23
Concrete slab or deck
NA
R-22
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-ll
/{-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
(continued)
134
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL Bi
TABLE 802.2(33)— continued
BUILDING ENVELOPE REQUIREMENTS 3 « hrou g h e . CLIMATE ZONE 15
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (l/-fector)
0.6
Slab or below-grade wall (A-value)
R-8
Windows and glass doors
PF < 0.25
SHGC
{/-factor
0.5
0.4
0.25 < PF < 0.50
0.6
0.4
PF > 0.50
0.7
0.4
Roof assemblies (/J-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
X
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (It-value)
All-wood joist/truss
Insulation between framing
Continuous Insulation
R-25
R-22
Metal joist/truss
R-30
R-23
Concrete slab or deck
NA
R-22
Above-grade walls (iJ-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-ll
/?-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-13
R-ll
/{-value continuous
R-6
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.6
Slab or below-grade wall (U-value)
R-8
Windows and glass doors
PF < 0.25
SHGC
W-factor
0.4
0.4
0.25 < PF < 0.50
0.5
0.4
PF > 0.50
0.7
0.4
Moof assemblies (A-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
R-38
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (if-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-22
Metal joist/truss
R-30
R-23
Concrete slab or deck
NA
R-22
Above-grade walls (fl-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-13
/{-value continuous
NA
R-7
R-4
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-13
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-13
R-ll
/{-value continuous
R-6
R-3
R-0
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An /{-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
135
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(34)
BUILDING ENVELOPE REQUIREMENTS 3 trough e. CLIMATE ZONE 16
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.6
Slab or below-grade wall (/{-value)
R-8
Windows and glass doors
PF < 0.25
SHGC
(Mactor
0.7
0.6
0.25 <PF< 0.50
Any
0.6
PF>0.50
Any
0.6
Roof assemblies {R- value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-19
Metal joist/truss
R-25
R-20
Concrete slab or deck
NA
R-19
Metal purlin with thermal block
R-30
R-20
Metal purlin without thermal block
X
R-20
Floors over outdoor air or unconditioned space (/{-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-22
Metal joist/truss
R-30
R-23
Concrete slab or deck
NA
R-22
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-ll
/{-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/J-value continuous
R-5
R-0
R-0
Other masonry walls
/?-value cavity
NA
R-ll
R-ll
/{-value continuous j
R-5
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.6
Slab or below-grade wall (R -value)
R-8
Windows and glass doors
PF<0.25
SHGC
(/■factor
0.7
0.5
0.25 <PF< 0.50
Any
0.5
PF > 0.50
Any
0.5
Roof assemblies (if -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
X
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-22
Metal joist/truss
R-30
R-23
Concrete slab or deck
NA
R-22
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-ll
/{-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-ll
R-ll
/{-value continuous
R-5
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-13
R-ll
/{-value continuous
R-9
R-3
R-0
(continued)
136
2003 INTERNATIONAL ENERGY CONSERVATION CODE 18
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(34) — continued
BUILDING ENVELOPE REQU!REMENTS a throu 9 h e - CLIMATE ZC
«E16
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ((/-factor)
0.6
Slab or below-grade wall (if -value)
R-8
Windows and glass doors
PF < 0.25
SHGC
lAfactor
0.5
0.4
0.25 < PF < 0.50
0.6
0.4
PF>0.50
0.7
0.4
Roof assemblies (A-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
X
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (R -value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-22
Metal joist/truss
R-30
R-23
Concrete slab or deck
NA
R-22
Above-grade walls (A-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-13
/{-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-13
R-ll
/{-value continuous
R-6
R-0
R-0
Other masonry walls
/{-value cavity
NA
R-13
R-13
/{-value continuous
R-9
R-3
R-0
-=
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (U-i actor)
0.6
Slab or below-grade wall (K-vatae)
R-8
Windows and glass doors
PF < 0.25
SHGC
(Afactor
0.4
0.4
0.25 < PF < 0.50
0.5
0.4
PF > 0.50
0.7
0.4
Moof assemblies (/{-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
R-38
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-22
Metal joist/truss
R-30
R-23
Concrete slab or deck
NA
R-22
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-13
/{-value continuous
NA
R-14
R-7
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-13
R-13
tf-value continuous
R-10
R-3
R-0
Other masonry walls
R-value cavity
NA
R-13
R-13
/{-value continuous
R-9
R-3
R-3
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
"NA" indicates the condition is not applicable.
An /{-value of zero indicates no insulation is required.
"Any" indicates any available product will comply.
"X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
137
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(35)
BUILDING ENVELOPE REQUIREMENTS" throu 9 h f - CLIMATE ZONE 17
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
0.6
Slab or below-grade wall (/?-value)
R-8
Windows and glass doors
PF < 0.25
SHGC
U-factor
0.7
0.5
0.25 < PF < 0.50
Any
0.5
PF > 0.50
Any
0.5
Roof assemblies (8 -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
X
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-22
Metal joist/truss
R-30
R-23
Concrete slab or deck
NA
R-22
Above-grade walls (l?-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-13
R-13
V?-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
R-value cavity
NA
R-13
R-ll
i?-value continuous
R-6
R-0
R-0
Other masonry walls
i?-value cavity
NA
R-13
R-ll
R-value continuous
R-6
R-0
R-0
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (IZ-factor)
0.6
Slab or below-grade wall (iJ-value)
R-8
Windows and glass doors
PF < 0.25
SHGC
Ofactor
0.7
0.4
0.25 < PF < 0.50
Any
0.4
PF5 0.50
Any
0.4
Roof assemblies (iJ-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
X
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (/t-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-22
Metal joist/truss
R-30
R-23
Concrete slab or deck
NA
R-22
Above-grade walls (ff-value)
Framed
No framing
Metal framing
Wood framing
R-value cavity
NA
R-13
R-13
R-value continuous
NA
R-3
R-0
CMU, > 8 inches, with integral insulation
R- value cavity
NA
R-13
R-ll
R-value continuous
R-6
R-0
R-0
Other masonry walls
R-value cavity
NA
R-13
R-ll
R-value continuous
R-9
R-3
R-0
(continued)
138
2003 INTERNATIONAL ENERGY CONSERVATION CODE 16
TABLE 802.2(35)-
BUILD1NG ENVELOPE REQUIREMENTS 15 throu 9 hf
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
■CLIMATE ZONE 17
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (t/-factor)
0.6
Slab or below-grade wall (R -value)
R-8
Windows and glass doors
PF < 0.25
SHGC a
(/-factor
0.7
0.4
0.25 < PF < 0.50
Any
0.4
PF > 0.50
Any
0.4
Roof assemblies (U-vatoe)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
X
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (Jf-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-22
Metal joist/truss
R-30
R-23
Concrete slab or deck
NA
R-22
Above-grade walls (ff-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-13
/{-value continuous
NA
R-4
R-3
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-13
R-13
/{-value continuous
R-10
R-4
R-3
Other masonry walls
/{-value cavity
NA
R-13
R-13
/{-value continuous
R-10
R-4
R-3
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ([/-factor)
0.6
Slab or below-grade wall (j?-value)
R-8
Windows and glass doors
PF < 0.25
SHGC
W-factor
0.4
0.4
0.25 < PF < 0.50
0.5
0.4
PF>0.50
0.7
0.4
Roof assemblies (R- value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
R-38
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (R -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-22
Metal joist/truss
R-30
R-23
Concrete slab or deck
NA
R-22
Above-grade walls (A-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-13
/{-value continuous
NA
R-14
R-14
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-13
R-13
/{-value continuous
R-14
R-10
R-7
Other masonry walls
/{-value cavity
NA
R-13
R-13
/{-value continuous
R-14
R-10
R-7
For SI: 1 inch = 25.4 mm.
a. For buildings over three stories in height, the maximum SHGC shall be 0.60.
b. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
c. "NA" indicates the condition is not applicable.
d. An /{-value of zero indicates no insulation is required.
e. "Any" indicates any available product will comply.
f. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(36)
BUILDING ENVELOPE REQUIREMENTS 3 ,Uu s he - CLIMATE ZONE 18
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (17-factor)
0.6
Slab or below-grade wall (/{-value)
R-12
Windows and glass doors
PF < 0.25
SHGC
(/-factor
0.7
0.6
0.25 < PF < 0.50
Any
0.6
PF>0.50
Any
0.6
Roof assemblies (R- value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
X
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-22
Metal joist/truss
R-30
R-23
Concrete slab or deck
NA
R-22
Above-grade walls (R -value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-13
/{-value continuous
NA
R-4
R-3
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-13
R-13
/{-value continuous
R-9
R-3
R-3
Other masonry walls
/{-value cavity
NA
R-13
R-13
/{-value continuous
R-10
R-4
R-3
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (17-factor)
0.6
Slab or below-grade wall (ff -value)
R-12
Windows and glass doors
PF < 0.25
SHGC
(/-factor
0.7
0.4
0.25 < PF < 0.50
Any
0.4
PF > 0.50
Any
0.4
Roof assemblies (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
X
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (/{-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-22
Metal joist/truss
R-30
R-23
Concrete slab or deck
NA
R-22
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-13
/{-value continuous
NA
R-4
R-3
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-13
R-13
/{-value continuous
R-9
R-3
R-3
Other masonry walls
/{-value cavity
NA
R-13
R-13
/{-value continuous
R-10
R-4
R-3
(continued)
140
2003 INTERNATIONAL ENERGY CONSERVATION CODE 8
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(36)— continued
BUILDING ENVELOPE REQUIREMENTS 8 ,hrou s h e - CLift
IATEZQNE18
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
X
Slab or below-grade wall (i?-value)
X
Windows and glass doors
PF<0.25
SHGC
(Afactor
X
X
0.25 < PF < 0.50
X
X
PF > 0.50
X
X
Koof assemblies (S-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
X
X
Metal joist/truss
X
X
Concrete slab or deck
X
X
Metal purlin with thermal block
X
X
Metal purlin without thermal block
X
X
Floors over outdoor air or unconditioned space (S-vatae)
All-wood joist/truss
Insulation between framing
Continuous insulation
X
X
Metal joist/truss
X
X
Concrete slab or deck
X
X
Above-grade walls (R -value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
X
X
/{-value continuous
NA
X
X
CMU, > 8 inches, with integral insulation
lvalue cavity
X
X
X
/{-value continuous
X
X
X
Other masonry walls
/{-value cavity
X
X
X
/{-value continuous
X
X
X
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights ({/-factor)
X
Slab or below-grade wall (R-vatae)
X
Windows and glass doors
PF < 0.25
SHGC
(Mactor
X
X
0.25 < PF < 0.50
X
X
PF>0.50
X
X
Moof assemblies (A-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
X
X
Metal joist/truss
X
X
Concrete slab or deck
X
X
Metal purlin with thermal block
X
X
Metal purlin without thermal block
X
X
Floors over outdoor air or unconditioned space (fl-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
X
X
Metal joist/truss
X
X
Concrete slab or deck
X
X
Above-grade walls (J?-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
X
X
/{-value continuous
NA
X
X
CMU, > 8 inches, with integral insulation
/{-value cavity
X
X
X
/{-value continuous
X
X
X
Other masonry walls
/{-value cavity
X
X
X
/{-value continuous
X
X
X
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An /{-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
1411
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
TABLE 802.2(37)
BUILDING ENVELOPE REQUIREMENTS 3 tfirou 8 h e - CLIMATE ZONE 19
WINDOW AND GLAZED DOOR AREA 10 PERCENT OR LESS OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (f -factor)
0.6
Slab or below-grade wall (/{-value)
R-12
Windows and glass doors
PF < 0.25
SHGC
(/-factor
0.7
0.5
0.25 < PF < 0.50
Any
0.5
PF > 0.50
Any
0.5
Roof assemblies (/f -value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
X
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (fi-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-22
Metal joist/truss
R-30
R-23
Concrete slab or deck
NA
R-22
Above-grade walls (/{-value)
Framed
No framing
Metal framing
\_ Wood framing
/{-value cavity
NA
R-13
R-13
/?-value continuous
NA
R-4
R-3
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-13
R-13
/{-value continuous
R-9
R-3
R-3
Other masonry walls
lvalue cavity
NA
R-13
R-13
/{-value continuous
R-10
R-4
R-3
WINDOW AND GLAZED DOOR AREA GREATER THAN 10 PERCENT BUT NOT GREATER THAN 25 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (^/-factor)
0.6
Slab or below-grade wall (/{-value)
R-12
Windows and glass doors
PF < 0.25
SHGC
(/-factor
0.7
0.4
0.25 < PF < 0.50
Any
0.4
PF > 0.50
Any
0.4
Roof assemblies (/{-value)
All- wood joist/truss
Insulation between framing
Continuous insulation
R-30
R-23
Metal joist/truss
R-30
R-24
Concrete slab or deck
NA
R-23
Metal purlin with thermal block
X
R-24
Metal purlin without thermal block
X
R-24
Floors over outdoor air or unconditioned space (U-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
R-25
R-22
Metal joist/truss
R-30
R-23
Concrete slab or deck
NA
R-22
Above-grade walls (/{-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
R-13
R-13
/?-value continuous
NA
R-4
R-3
CMU, > 8 inches, with integral insulation
/{-value cavity
NA
R-13
R-13
R-value continuous
R-9
R-3
R-3
Other masonry walls
/{-value cavity
NA
R-13
R-13
/{-value continuous
R-10
R-4
R-3
(continued)
142
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDING
TABLE 802.2(37)— continued
BUILDING ENVELOPE REQUIREMENTS 3 throu S h e - CLIMATE ZONE 19
WINDOW AND GLAZED DOOR AREA GREATER THAN 25 PERCENT BUT NOT GREATER THAN 40 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (U -factor)
X
Slab or below-grade wall (/(-value)
X
Windows and glass doors
PF < 0.25
SHGC
iAfacfor
X
X
0.25 < PF < 0.50
X
X
PF>0.50
X
X
Moof assemblies (R -value)
All-wood joist/trass
Insulation between framing
Continuous insulation
X
X
Metal joist/truss
X
X
Concrete slab or deck
X
X
Metal purlin with thermal block
X
X
Metal purlin without thermal block
X
X
Floors over outdoor air or unconditioned space (JJ-valne)
All-wood joist/truss
Insulation between framing
Continuous insulation
X
X
Metal joist/truss
X
X
Concrete slab or deck
X
X
Above-grade walls (A-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
X
X
/{-value continuous
NA
X
X
CMU, > 8 inches, with integral insulation
/{-value cavity
X
X
X
if- value continuous
X
X
X
Other masonry walls
/{-value cavity
X
X
X
R- value continuous
X
X
X
WINDOW AND GLAZED DOOR AREA GREATER THAN 40 PERCENT BUT NOT GREATER THAN 50 PERCENT OF ABOVE-GRADE WALL AREA
ELEMENT
CONDITION/VALUE
Skylights (^/-factor)
X
Slab or below-grade wall (R-value)
X
Windows and glass doors
PF < 0.25
SHGC
U-factor
X
X
0.25 < PF < 0.50
X
X
PF > 0.50
X
X
Roof assemblies (/{-value)
All-wood joist/truss
Insulation between framing
Continuous insulation
X
X
Metal joist/truss
X
X
Concrete slab or deck
X
X
Metal purlin with thermal block
X
X
Metal purlin without thermal block
X
X
Floors over outdoor air or unconditioned space (R -value)
All- wood joist/truss
Insulation between framing
Continuous insulation
X
X
Metal joist/truss
X
X
Concrete slab or deck
X
X
Above-grade walls (S-value)
Framed
No framing
Metal framing
Wood framing
/{-value cavity
NA
X
X
R- value continuous
NA
X
X
CMU, > 8 inches, with integral insulation
/{-value cavity
X
X
X
/{-value continuous
X
X
X
Other masonry walls
/{-value cavity
X
X
X
/{-value continuous
X
X
X
For SI: 1 inch = 25.4 mm.
a. Values from Tables 802.2(5) through 802.2(37) shall be used for the purpose of the completion of Tables 802.2(1) through 802.2(4), as applicable based on win-
dow and glazed door area.
b. "NA" indicates the condition is not applicable.
c. An /{-value of zero indicates no insulation is required.
d. "Any" indicates any available product will comply.
e. "X" indicates no complying option exists for this condition.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
143
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
CLIMATE iiAP^
901.1 Scope. The criteria of this chapter establish design con-
ditions based on political boundaries for use with climate-de-
pendent requirements in Chapters 5, 6 and 8, as applicable.
SECTION 902
CLIMATE ZONES
902.1 General. The climate zone for use in Table 302.1 shall
be selected from the applicable map in Figures 902.1(1)
1 through 902.1(51) corresponding to the state and county of
i each jurisdiction.
2003 INTERNATIONAL ENERGY CONSERVATION CODE® 145
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Zone 4B t^ Zone 7A
Zone 5A (SW^j Zone 8
llllill Zone6B
Zone
County
6B
Autauga (H)
4B
Baldwin (H)
5A
Barbour (H)
6B
Bibb (H)
7A
Blount
5A
Bullock (H)
5A
Butler (H)
6B
Calhoun (H)
6B
Chambers (H)
7A
Cherokee
6B
Chilton (H)
5A
Choctaw (H)
5A
Clarke (H)
7A
Clay
7A
Cleburne
4B
Coffee (H)
8
Colbert (H)
5A
Conecuh (H)
6B
Coosa (H)
4B
Covington (H)
5A
Crenshaw (H)
7A
Cullman
4B
Dale (H)
5A
Dallas (H)
8
De Kalb
6B
Elmore (H)
4B
Escambia (H)
7A
Etowah
7A
Fayette
8
Franklin
4B
Geneva (H)
5A
Greene (H)
5A
Hale (H)
4B
Henry (H)
Zone County
4B Houston (H)
8 Jackson
6B Jefferson (H)
7A Lamar
8 Lauderdale
8 Lawrence
6B Lee(H)
8 Limestone
5A Lowndes (H)
6B Macon (H)
8 Madison
5A Marengo (H)
7A Marion
8 Marshall
4B Mobile (H)
5A Monroe (H)
6B Montgomery (H)
8 Morgan
5A Perry (H)
6B Pickens (H)
5A Pike(H)
7A Randolph
5A Russell (H)
6B Shelby (H)
6B St Clair (H)
5A Sumter (H)
6B Talladega (H)
6B Tallapoosa (H)
6B Tuscaloosa (H)
6B Walker (H)
5A Washington (H)
5A Wilcox (H)
7A Winston
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a. Counties identified with (H) shall be considered "hot and humid climate areas" for purposes of the application of Section 502.1.1.
FIGURE 902.1(1)
ALABAMA 3
©
Zone
Borough 3
u>
16
Adak Region
17
Kenai Peninsula
1
HI
19
Alaska Gateway
15
Ketchikan Gateway
fli
3
17
Aleutian Region
16
Kodiak Island
5
17
Aleutians East
18
Kuspuk
17
Anchorage
17
Lake and Peninsula
O
15
Annette Island
18
Lower Kuskokwim
>
19
Bering Straits
18
Lower Yukon
17
Bristol Bay
17
Matanuska-Susitna
z
m
16
Chatham
19
North Slope
3
17
Chugach
19
Northwest Arctic
18
Copper River
17
Pribilof Islands
O
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18
Delta/Greely
15
Sitka
18
Denali
15
Southeast Island
in
18
Fairbanks North Star
17
Southwest Region
3
<
16
Haines
17
Yakutat
3*
19
Iditarod Area
19
Yukon Flats
O
16
Juneau
19
Yukon-Koyukuk
Z
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18
Kashunamiut
18
Yupiit
a. Borough refers to boroughs, united home rule municipalities and regional education attendance areas.
FIGURE 902.1(2)
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Zone
County
13B
Apache
6B
Cochise
14A
Coconino
8
Gila
6B
Graham
6B
Greenlee
3C
La Paz
3C
Maricopa
7B
Mohave
10B
Navajo
4B
Pima
4B
Pinal
6B
Santa Cruz
10B
Yavapai
3C
Yuma
^ Zone3C
Zone 4B
Zone 6B
Zone 7B
Zone 8
Zone 10B
Zone 13B
I Zone 14A
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FIGURE 902.1(3)
ARIZONA
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Zone 6B
Zone 7B
Zone 8
Zone 9B
Zone
6B
6B
9B
9B
9B
6B
6B
9B
6B
6B
8
8
6B
6B
7B
7B
7B
6B
6B
6B
7B
8
8
7B
6B
8
7B
7B
7B
8
8
8
6B
8
6B
8
County
Arkansas (H)
Ashley (H)
Baxter
Benton
Boone
Bradley (H)
Calhoun (H)
Carroll
Chicot (H)
Clark (H)
Clay
Cleburne
Cleveland (H)
Columbia (H)
Conway (H)
Craighead
Crawford
Crittenden (H)
Cross (H)
Dallas (M)
Desha (H)
Drew (H)
Faulkner (H)
Franklin
Fulton
Garland (H)
Grant (H)
Greene
Hempstead (H)
Hot Spring (H)
Howard (H)
Independence
Izard
Jackson
Jefferson (H)
Johnson
Lafayette (H)
Lawrence
7B
6B
6B
7B
7B
9B
9B
6B
8
7B
8
6B
9B
6B
7B
7B
7B
8
8
8
7B
7B
8
7B
7B
9B
8
7B
8
7B
9B
6B
8
9B
7B
7B
7B
Lee (H)
Lincoln (H)
Little River (H)
Logan (H)
Lonoke (H)
Madison
Marion
Miller (H)
Mississippi
Monroe (H)
Montgomery
Nevada (H)
Newton
Ouachita (H)
Perry (H)
Phillips (H)
Pike (H)
Poinsett
Polk
Pope
Prairie (H)
Pulaski (H)
Randolph
Saline (H)
Scott (H)
Searcy
Sebastian
Sevier (H)
Sharp
St Francis (H)
Stone
Union (H)
Van Buren
Washington
White (H) -
Woodruff (H)
Yell (H)
a. Counties identified with (H) shall be considered "hot and humid climate areas" for purposes of the application of Section 502.1 .1 .
FIGURE 902.1(4)
ARKANSAS 3
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Zone 3A
Zone 4A
Zone 4B
Zone 5 A
Zone 5B
Zone 6A
Zone 6B
Zone 8
Zone 9A
Zone 9B
Zone 11 A
Zone 13B
Zone 15
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Zone
County
Zone
County
>
6A
Alameda
6A
Monterey
S
>
15
Alpine
6A
Napa
8
Amador
11A
Nevada
"0
6B
Butte
4A
Orange
8
Calaveras
8
Placer
6B
Colusa
13B
Plumas
6A
Contra Costa
4B
Riverside
9A
Del Norte
6B
Sacramento
8
El Dorado
6B
San Benito
6B
Fresno
4B
San Bernardino
6B
Glenn
3A
San Diego
9A
Humboldt
6A
San Francisco
3A
Imperial
6A
San Joaquin
9B
Inyo
6A
San Luis Obispo
5B
Kern
6A
San Mateo
6B
Kings
5A
Santa Barbara
8
Lake
6A
Santa Clara
13B
Lassen
6A
Santa Cruz
4A
Los Angeles
6B
Shasta
6B
Madera
11A
Sierra
6A
Marin
11A
Siskiyou
8
Mariposa
6A
Solano
8
Mendocino
6A
Sonoma
6B
Merced
6B
Stanislaus
15
Modoc
6B
Sutter
15
Mono
6B
9B
6B
8
4A
6B
6B
Tehama
Trinity
Tulare
Tuolumne
Ventura
Yolo
Yuba
FIGURE 902.1(5)
CALIFORNIA
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Zone
13B
County
Adams
16
Alamosa
13B
16
Arapahoe
Archuleta
11B
Baca
11B
Bent
13B
Boulder
16
Chaffee
13B
17
Cheyenne
Clear Creek
16
16
Conejos
Costilla
11B
16
Crowley
Custer
13B
Delta
13B
Denver
15
Dolores
13B
15
13B
Douglas
Eagle
El Paso
13B
Elbert
11B
Fremont
15
Garfield
13B
17
Gilpin
Grand
17
Gunnison
17
Hinsdale
11B
Huerfano
17
Jackson
13B
Jefferson
Zone 11 B
5%2 Zone13B
13B
13B
Kiowa
Kit Carson
Zone 15
<OT Zone 16
hill 1 Zone 17
Zone
Coynty
15
La Plata
17
Lake
13B
Larimer
11B
Las Animas
13B
Lincoln
13B
Logan
13B
Mesa
17
Mineral
15
Moffat
15
Montezuma
13B
Montrose
13B
Morgan
11B
Otero
15
Ouray
17
Park
13B
Phillips
17
Pitkin
11B
Prowers
11B
Pueblo
15
Rio Blanco
17
Rio Grande
17
Routt
16
Saguache
17
San Juan
15
San Miguel
13B
Sedgwick
17
Summit
13B
Teller
13B
Washington
13B
Weld
13B
Yuma
o
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FIGURE 902.1(6)
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Zone County
12A Fairfield
13A Hartford
14A Litchfield
12A Middlesex
12A New Haven
12A New London
14A Tolland
14A Windham
Zone12A
Zone 13A
Zone 14A
FIGURE 902.1(7)
CONNECTICUT
CLIMATE MAPS
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2003 INTERNATIONAL ENERGY CONSERVATION CODE®
153
CLIMATE MAPS
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2003 INTERNATIONAL ENERGY CONSERVATION CODE 6
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Zone
3B
3B
4B
3B
2A
1B
4B
2A
2A
3B
1B
3B
1B
2A
3B
3B
4B
3B
4B
4B
3B
1B
4B
3B
2A
1B
2A
2A
2A
4B
2A
4B
4B
3B
CounSy
Alachua (H)
Baker (H)
Bay (H)
Bradford (H)
Brevard (H)
Broward (H)
Calhoun (H)
Charlotte (H)
Citrus (H)
Clay (H)
Collier (H)
Columbia (H)
Dade (H)
De Soto (H)
Dixie (H)
Duval (H)
Escambia (H)
Flagler (H)
Franklin (H)
Gadsden (H)
Gilchrist (H)
Glades (H)
Gulf(H)
Hamilton (H)
Hardee (H)
Hendry (H)
Hernando (H)
Highlands (H)
Hillsborough (H)
Holmes (H)
Indian River (H)
Jackson (H)
Jefferson (H)
Lafayette (H)
Zone
2A
1B
4B
2A
4B
3B
2A
2A
1B
1B
3B
4B
2A
2A
2A
1B
2A
2A
2A
3B
4B
2A
2A
3B
2A
2A
3B
3B
3B
2A
4B
4B
4B
County
Lake (H)
Lee (H)
Leon (H)
Levy (H)
Liberty (H)
Madison (H)
Manatee (H)
Marion (H)
Martin (H)
Monroe (H)
Nassau (H)
Okaloosa (H)
Okeechobee (H)
Orange (H)
Osceola (H)
Palm Beach (H)
Pasco (H)
Pinellas (H)
Polk (H)
Putnam (H)
Santa Rosa (H)
Sarasota (H)
Seminole (H)
St Johns (H)
St Lucie (H)
Sumter (H)
Suwannee (H)
Taylor (H)
Union (H)
Volusia (H)
Wakulla (H)
Walton (H)
Washington (H)
ZonelB
Zone 2A
Zone 3B
Zone 4B
a. Counties identified with (H) shall be considered "hot and humid climate areas" for purposes of the application of Section 502.1.1.
FIGURE 902.1(10)
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Zone County
4B Appling (H)
4B Atkinson (H)
4B Bacon (H)
4B Baker (H)
6B Baldwin (H)
7A Banks
7A Barrow
7A Bartow
Zone
5A
4B
5A
5A
4B
4B
4B
5A
6B
7A
5A
4B
5A
7A
8
4B
4B
County
Ben Hill (H)
Berrien (H)
Bibb (H)
Bleckley (H)
Brantley (H)
Brooks (H)
Bryan (H)
Bulloch (H)
Burke (H)
Butts
Calhoun (H)
Camden (H)
Candler (H)
Carroll
Catoosa
Charlton (H)
Chatham (H)
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5A Chattahoochee (H)
8 Chattooga
8 Cherokee
7A Clarke
5A Clay (H)
7A Clayton
4B Clinch (H)
7A Cobb
5A Coffee (H)
4B Colquitt (H)
6B Columbia (H)
4B Cook (H)
7A Coweta
5A Crawford (H)
5A Crisp (H)
8 Dade
8 Dawson
7A De Kalb
4B Decatur (H)
5A Dodge (H)
5A Dooly (H)
5A Dougherty (H)
7A Douglas
5A Early (H)
4B Echols (H)
4B Effingham (H)
7A Elbert
5A Emanuel (H)
4B Evans (H)
8 Fannin
7A Fayette
7A Floyd
8 Forsyth
-7A Franklin
Zone 4B
Zone 5A
Zone 6B
Zone 7A
Zone 8
O | a. Counties identified with (H) shall be considered "hot and humid climate areas" for purposes of the application of Section 502.1 .1 .
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FIGURE 902.1(11)
GEORGIA 3
Zone
7A
8
6B
4B
8
4B
6B
7A
8
7A
6B
7A
6B
7A
6B
7A
5A
5A
7A
6B
4B
6B
5A
5A
6B
6B
4B
5A
5A
4B
6B
4B
4B
8
5A
7A
5A
6B
4B
6B
4B
4B
6B
5A
6B
8
5A
7A
7A
7A
County
Fulton
Gilmer
Glascock (H)
Glynn (H)
Gordon
Grady (H)
Greene (H)
Gwinnett
Habersham
Hall
Hancock (H)
Haralson
Harris (H)
Hart
Heard (H)
Henry
Houston (H)
Irwin (H)
Jackson
Jasper (H)
Jeff Davis (H)
Jefferson (H)
Jenkins (H)
Johnson (H)
Jones (H)
Lamar (H)
Lanier (H)
Laurens (H)
Lee (H)
Liberty (H)
Lincoln (H)
Long (H)
Lowndes (H)
Lumpkin
Macon (H)
Madison
Marion (H)
McDuffie (H)
Mcintosh (H)
Meriwether (H)
Miller (H)
Mitchell (H)
Monroe (H)
Montgomery (H)
Morgan (H)
Murray
Muscogee (H)
Newton
Oconee
Oglethorpe
Zone
7A
5A
8
4B
6B
7A
5A
6B
5A
8
5A
6B
7A
5A
5A
4B
7A
7A
5A
5A
5A
6B
4B
5A
5A
5A
4B
5A
4B
8
5A
5A
6B
5A
5A
8
5A
8
7A
4B
6B
6B
4B
5A
5A
8
8
5A
7A
5A
County
Paulding
Peach (H)
Pickens
Pierce (H)
Pike (H)
Polk
Pulaski (H)
Putnam (H)
Quitman (H)
Rabun
Randolph (H)
Richmond (H)
Rockdale
Schley (H)
Screven (H)
Seminole (H)
Spalding
Stephens
Stewart (H)
Sumter (H)
Talbot (H)
Taliaferro (H)
Tattnall (H)
Taylor (H)
Telfair (H)
Terrell (H)
Thomas (H)
Tift (H)
Toombs (H)
Towns
Treutlen (H)
Troup (H)
Turner (H)
Twiggs (H)
Union
Upson (H)
Walker
Walton
Ware (H)
Warren (H)
Washington (H)
Wayne (H)
Webster (H)
Wheeler (H)
White
Whitfield
Wilcox (H)
Wilkes
Wilkinson (H)
Worth (H)
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1A
1A
1A
1A
County
Hawaii (H)
Honolulu (H)
Kalawao(H)
Kauai H)
Maui (H)
Zone 1A
a. Counties identified with (H) shall be considered "hot and humid climate areas" for purposes of the application of Section 502.1 .1 .
FIGURE 902.1(12)
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Zone
County
Zone
County
12B
Ada
13B
Gem
15
Adams
13B
Gooding
15
Bannock
15
Idaho
15
Bear Lake
16
Jefferson
14A
Benewah
14B
Jerome
15
Bingham
14A
Kootenai
16
Blaine
14A
Latah
15
Boise
15
Lemhi
15
Bonner
15
Lewis
15
Bonneville
15
Lincoln
15
Boundary
16
Madison
16
Butte
15
Minidoka
15
Camas
12B
Nez Perce
12B
Canyon
15
Oneida
15
Caribou
12B
Owyhee
14B
Cassia
12B
Payette
15
Clark
15
Power
12B
Clearwater
14A
Shoshone
16
Custer
16
Teton
13B
Elmore
14B
Twin Falls
15
Franklin
16
Valley
16
Fremont
13B
Washington
[ ' "! Zone 12B
Zone13B
Zone 14A
Zone 14B
I I Zone 15
Zone 16
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FIGURE 902.1(13)
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Zone 11 B
Zone 12B
Zone 13B
Zone 14B
Zone
County
Zone
County
Zone
County
12B
Adams
10B
Hardin
12B
Morgan
10B
Alexander
13B
Henderson
12B
Moultrie
11B
Bond
13B
Henry
14B
Ogle
14B
Boone
13B
Iroquois
13B
Peoria
12B
Brown
10B
Jackson
10B
Perry
13B
Bureau
11B
Jasper
12B
Piatt
11B
Calhoun
11B
Jefferson
12B
Pike
14B
Carroll
10B
Jersey
10B
Pope
12B
Cass
14B
Jo Daviess
10B
Pulaski
12B
Champaign
10B
Johnson
13B
Putnam
11B
Christian
14B
Kane
10B
Randolph
12B
Clark
13B
Kankakee
11B
Richland
11B
Clay
13B
Kendall
13B
Rock Island
10B
Clinton
13B
Knox
10B
Saline
12B
Coles
13B
La Salle
12B
Sangamon
14B
Cook
14B
Lake
12B
Schuyler
11B
Crawford
11B
Lawrence
12B
Scott
12B
Cumberland
14B
Lee
11B
Shelby
14B
De Kalb
13B
Livingston
10B
St Clair
12B
De Witt
12B
Logan
13B
Stark
12B
Douglas
12B
Macon
14B
Stephenson
14B
Du Page
11B
Macoupin
12B
Tazewell
12B
Edgar
10B
Madison
10B
Union
11B
Edwards
11B
Marion
12B
Vermilion
11B
Effingham
13B
Marshall
11B
Wabash
11B
Fayette
12B
Mason
13B
Warren
13B
Ford
10B
Massac
10B
Washington
10B
Franklin
13B
McDonough
11B
Wayne
13B
Fulton
14B
McHenry
10B
White
10B
Gallatin
12B
McLean
14B
Whiteside
11B
Greene
12B
Menard
13B
Will
13B
Grundy
13B
Mercer
10B
Williamson
10B
Hamilton
10B
Monroe
14B
Winnebago
13B
Hancock
11B
Montgomery
13B
Woodford
en
FIGURE 902.
ILLINQM
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Zone
County
Zone
County
Zone
County
13B
Adams
12B
Hendricks
11B
Pike
13B
Allen
12B
Henry
13B
Porter
11B
Bartholomew
13B
Howard
10B
Posey
13B
Benton
14A
Huntington
13B
Pulaski
13B
Blackford
11B
Jackson
12B
Putnam
12B
Boone
13B
Jasper
13B
Randolph
11B
Brown
13B
Jay
11B
Ripley
13B
Carroll
10B
Jefferson
12B
Rush
13B
Cass
11B
Jennings
11B
Scott
10B
Clark
12B
Johnson
12B
Shelby
12B
Clay
11B
Knox
10B
Spencer
13B
Clinton
14A
Kosciusko
13B
St Joseph
11B
Crawford
13B
La Porte
13B
Starke
11B
Daviess
14A
Lagrange
14A
Steuben
13B
De Kalb
13B
Lake
11B
Sullivan
11B
Dearborn
11B
Lawrence
10B
Switzerland
12B
Decatur
13B
Madison
13B
Tippecanoe
13B
Delaware
12B
Marion
13B
Tipton
11B
Dubois
13B
Marshall
12B
Union
13B
Elkhart
11B
Martin
10B
Vanderburgh
12B
Fayette
14A
Miami
12B
Vermillion
10B
Floyd
11B
Monroe
12B
Vigo
12B
Fountain
12B
Montgomery
14A
Wabash
12B
Franklin
12B
Morgan
12B
Warren
14A
Fulton
13B
Newton
10B
Warrick
10B
Gibson
14A
Noble
11B
Washington
13B
Grant
11B
Ohio
12B
Wayne
11B
Greene
11B
Orange
13B
Wells
12B
Hamilton
12B
Owen
13B
White
12B
Hancock
12B
Parke
14A
Whitley
10B
Harrison
10B
Perry
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Zone 11 B [T3 Zone14A
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Zone 12B
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FIGURE 902.1(15)
INDIANA
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Zone County
14B Adair
13B Adams
15 Allamakee
1 3B Appanoose
14B Audubon
14B Benton
15 Black Hawk
14B Boone
Zone County
15 Bremer
15 Buchanan
15 Buena Vista
15 Butler
15 Calhoun
14B Carroll
14B Cass
14B Cedar
Zone County
1 5 Cerro Gordo
1 5 Cherokee
1 5 Chickasaw
13B Clarke
15 Clay
15 Clayton
1 3B Clinton
14B Crawford
Zone County
14B Dallas
13B Davis
13B Decatur
15 Delaware
13B Des Moines
15 Dickinson
14B Dubuque
15 Emmet
Zone County
15 Fayette
Floyd
Franklin
13B Fremont
14B Greene
15 Grundy
14B Guthrie
15 Hamilton
15
15
Zone County
15 Hancock
15 Hardin
14B Harrison
13B Henry
15 Howard
15 Humboldt
15 Ida
14B Iowa
m
Zone
14B
14B
13B
13B
14B
13B
15
13B
14B
13B
13B
15
14B
13B
13B
14B
13B
County
Jackson
Jasper
Jefferson
Johnson
Jones
Keokuk
Kossuth
Lee
Linn
Louisa
Lucas
Lyon
Madison
Mahaska
Marion
Marshall
Mills
Zone
15
14B
13B
13B
13B
15
15
13B
15
15
15
14B
14B
14B
13B
15
13B
14B
15
14B
14B
13B
13B
13B
13B
14B
13B
13B
15
15
15
15
15
15
County
Mitchell
Monona
Monroe
Montgomery
Muscatine
O'Brien
Osceola
Page
Palo Alto
Plymouth
Pocahontas
Polk
Pottawattamie
Poweshiek
Ringgold
Sac
Scott
Shelby
Sioux
Story
Tama
Taylor
Union
Van Buren
Wapello
Warren
Washington
Wayne
Webster
Winnebago
Winneshiek
Woodbury
Worth
Wright
Zone 13B
Zone 14B
Zone 1 5
FIGURE 902.1(16)
m
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10B
10B
11B
9B
11B
10B
11B
10B
10B
9B
County
Allen
Anderson
Atchison
Barber
Barton
Bourbon
Brown
Butler
Chase
Chautauqua
Zone
9B
13B
10B
11B
12B
10B
9B
9B
9B
13B
County
Cherokee
Cheyenne
Clark
Clay
Cloud
Coffey
Comanche
Cowley
Crawford
Decatur
Zone
11B
11B
10B
11B
9B
12B
11B
11B
11B
10B
County
Dickinson
Doniphan
Douglas
Edwards
Elk
Ellis
Ellsworth
Finney
Ford
Franklin
Zone
11B
12B
12B
11B
11B
12B
10B
11B
9B
11B
County
Geary
Gove
Graham
Grant
Gray
Greeley
Greenwood
Hamilton
Harper
Harvey
Zone County
11B Haskell
11 B Hodgeman
11 B Jackson
11B Jefferson
12B Jewell
11B Johnson
11B Kearny
10B Kingman
1 0B Kiowa
9B Labette
Zone County
12B Lane
1 1 B Leavenworth
11 B Lincoln
10B Linn
12B Logan
11 B Lyon
11B Marion
12B Marshall
11B McPherson
10B Meade
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Zone
10B
12B
9B
11B
10B
11B
9B
12B
13B
10B
County
Miami
Mitchell
Montgomery
Morris
Morton
Nemaha
Neosho
Ness
Norton
Osage
.;■...,.■■ : ■ . ....
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Zone
12B
11B
11B
12B
11B
10B
13B
11B
12B
11B
11B
12B
11B
11B
11B
12B
10B
10B
11B
12B
13B
12B
11B
11B
10B
9B
13B
12B
11B
12B
12B
12B
9B
10B
11B
County
Osborne
Ottawa
Pawnee
Phillips
Pottawatomie
Pratt
Rawlins
Reno
Republic
Rice
Riley
Rooks
Rush
Russell
Saline
Scott
Sedgwick
Seward
Shawnee
Sheridan
Sherman
Smith
Stafford
Stanton
Stevens
Sumner
Thomas
Trego
Wabaunsee
Wallace
Washington
Wichita
Wilson
Woodson
Wyandotte
r I Zone 9B
R^ ZonelOB
Zone 11 B
Zone 12B
Zone 13B
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FIGURE 902.1(17)
KANSAS
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County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
9B
Adair
9B
Caldwell
10B
Estill
11B
Harrison
10B
Lee
9B
McCracken
11B
Nicholas
11B
Scott
9B
Allen
9B
Calloway
10B
Fayette
9B
Hart
10B
Leslie
10B
McCreary
9B
Ohio
10B
Shelby
10B
Anderson
11B
Campbell
11B
Fleming
9B
Henderson
10B
Letcher
9B
McLean
10B
Oldham
9B
Simpson
9B
Ballard
9B
Carlisle
10B
Floyd
10B
Henry
11B
Lewis
9B
Meade
10B
Owen
10B
Spencer
9B
Barren
10B
Carroll
10B
Franklin
9B
Hickman
10B
Lincoln
10B
Menifee
10B
Owsley
9B
Taylor
11B
Bath
11B
Carter
9B
Fulton
9B
Hopkins
9B
Livingston
10B
Mercer
11B
Pendleton
9B
Todd
10B
Bell
10B
Casey
11B
Gallatin
10B
Jackson
9B
Logan
9B
Metcalfe
10B
Perry
9B
Trigg
11B
Boone
9B
Christian
10B
Garrard
10B
Jefferson
9B
Lyon
9B
Monroe
10B
Pike
10B
Trimble
10B
Bourbon
10B
Clark
11B
Grant
10B
Jessamine
10B
Madison
10B
Montgomery
10B
Powell
9B
Union
11B
Boyd
10B
Clay
9B
Graves
11B
Johnson
10B
Magoffin
10B
Morgan
10B
Pulaski
9B
Warren
10B
Boyle
10B
Clinton
9B
Grayson
11B
Kenton
10B
Marion
9B
Muhlenberg
11B
Robertson
10B
Washington
11B
Bracken
9B
Crittenden
9B
Green
10B
Knott
9B
Marshall
10B
Nelson
10B
Rockcastle
10B
Wayne
10B
Breathitt
9B
Cumberland
11B
Greenup
10B
Knox
11B
Martin
11B
Rowan
9B
Webster
9B
Breckenridge
9B
Daviess
9B
Hancock
9B
Larue
11B
Mason
10B
Russell
10B
Whitley
10B
Bullitt
9B
Edmonson
9B
Hardin
10B
Laurel
10B
Wolfe
9B
Butler
11B
Elliot
10B
Harlan
11B
Lawrence
10B
Woodford
Zone9B S Zone 11 B
Zone 10B
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FIGURE 902.1(18)
KENTUCKY
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Zone
4B
4B
4B
3B
5A
4B
6B
6B
6B
4B
6B
4B
5A
6B
5A
5A
4B
Parish
Acadia (H)
Allen (H)
Ascension (H)
Assumption (H)
Avoyelles (H)
Beauregard (H)
Bienville (H)
Bossier (H)
Caddo (H)
Calcasieu (H)
Caldwell (H)
Cameron (H)
Catahoula (H)
Claiborne (H)
Concordia (H)
De Soto (H)
East Baton Rouge (H)
Zone
6B
4B
4B
6B
5A
4B
4B
6B
3B
4B
5A
4B
3B
6B
4B
6B
6B
Parish
East Carroll (H)
East Feliciana (H)
Evangeline (H)
Franklin (H)
Grant (H)
Iberia (H)
Iberville (H)
Jackson (H)
Jefferson (H)
Jefferson Davis (H)
La Salle (H)
Lafayette (H)
Lafourche (H)
Lincoln (H)
Livingston (H)
Madison (H)
Morehouse (H)
Zone
5A
3B
6B
3B
4B
5A
5A
6B
5A
3B
3B
4B
3B
3B
4B
4B
3B
4B
4B
5A
3B
6B
4B
5A
4B
6B
4B
6B
4B
5A
Zone 3B
Zone 4B
Zone 5A
Zone 6B
Parish
Natchitoches (H)
Orleans (H)
Ouachita (H)
Plaquemines (H)
Pointe Coupee (H)
Rapides (H)
Red River (H)
Richland (H)
Sabine (H)
St Bernard (H)
St Charles (H)
St Helena (H)
St James (H)
St John The Baptist (H)
St Landry (H)
St Martin (H)
St Mary (H)
St Tammany (H)
Tangipahoa (H)
Tensas (H)
Terrebonne (H)
Union (H)
Vermilion (H)
Vernon (H)
Washington (H)
Webster (H)
West Baton Rouge (H)
West Carroll (H)
West Feliciana (H)
Winn (H)
>
m
5
>
■o
w
a. Counties identified with (H) shall be considered "hot and humid climate areas" for purposes of the application of Section 502.1 .1 .
FIGURE 902.1(19)
LOUISIANA 3
to
so
2
Hj
o
z
r
m
m
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o
o
2
CO
m
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o
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Zone 15
Zone 16
Zone 17
Zone
County
15
Androscoggin
17
Aroostook
15
Cumberland
16
Franklin
15
Hancock
15
Kennebec
15
Knox
15
Lincoln
16
Oxford
15
Penobscot
17
Piscataquis
15
Sagadahoc
17
Somerset
15
Waldo
15
Washington
15
York
FIGURE 902.1(20)
MAINE
O
S
m
m
o
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o
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z
to
m
<
>
1
Zone 9B
PUBS)
Zone 12B
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Zone 10B BffiB
Zone 1 3A
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Zone 11 B
3
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1
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39
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m
Zone
County
12B
Allegany
9B
Anne Arundel
10B
Baltimore
9B
Baltimore City
9B
Calvert
9B
Caroline
11B
Carroll
10B
Cecil
9B
Charles
9B
Dorchester
11B
Frederick
13A
Garrett
Zone
County
10B
Harford
10B
Howard
10B
Kent
10B
Montgomery
10B
Prince Georges
9B
Queen Annes
9B
Somerset
9B
St Marys
9B
Talbot
11B
Washington
9B
Wicomico
9B
Worcester
s
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rn
FIGURE 902.1(21)
MARYLAND
rn
3
O
m
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a
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Q
2
(0
rn
30
<
O
2
O
O
o
m
Zone
County
12A
Barnstable
14A
Berkshire
12A
Bristol
12A
Dukes
13A
Essex
14A
Franklin
14A
Hampden
14A
Hampshire
13A
Middlesex
12A
Nantucket
13A
Norfolk
12A
Plymouth
13A
Suffolk
14A
Worcester
Zone 12A
Zone 13A
m
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FIGURE 902.1(22)
MASSACHUSETTS
5
m
>
en
05
Zone
County
Zone County
15
Alcona
17
Keweenaw
16
Alger
15
Lake
14A
Allegan
14A
Lapeer
15
Alpena
15
Leelanau
15
Antrim
14A
Lenawee
15
Arenac
14A
Livingston
17
Baraga
16
Luce
14A
Barry
16
Mackinac
15
Bay
14A
Macomb
15
Benzie
15
Manistee
14A
Berrien
16
Marquette
14A
Branch
15
Mason
14A
Calhoun
15
Mecosta
14A
Cass
16
Menominee
15
Charlevoix
15
Midland
15
Cheboygan
15
Missaukee
16
Chippewa
13A
Monroe
15
Clare
14A
Montcalm
14A
Clinton
15
Montmorency
15
Crawford
14A
Muskegon
16
Delta
15
Newaygo
16
Dickinson
14A
Oakland
14A
Eaton
15
Oceana
15
Emmet
15
Ogemaw
14A
Genesee
17
Ontonagon
15
Gladwin
15
Osceola
17
Gogebic
15
Oscoda
15
Grand Traverse
15
Otsego
o
14A
Gratiot
14A
Ottawa
14A
Hillsdale
15
Presque Isle
s
17
Houghton
15
Roscommon
m
14A
Huron
14A
Saginaw
3
Z
14A
Ingham
14A
Sanilac
>
14A
Ionia
16
Schoolcraft
o
15
Iosco
14A
Shiawassee
2
>
1-
17
Iron
14A
St Clair
15
Isabella
14A
St Joseph
m
z
14A
Jackson
14A
Tuscola
m
3j
14A
Kalamazoo
14A
Van Buren
O
15
Kalkaska
13A
Washtenaw
<
o
14A
Kent
13A
Wayne
o
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m
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O
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15
Wexford
o
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m
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m
5
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Zone13A
Zone 14A
Zone 15
Zone 16
Zone 17
FIGURE 902.1(23)
MICHIGAN
o
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z
6
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1=
m
z
m
30
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o
o
z
in
o
z
o
o
o
na
Zone
County
Zone
County
17
Aitkin
17
Marshall
16
Anoka
15
Martin
17
Becker
15
McLeod
17
Beltrami
16
Meeker
16
Benton
16
Mille Lacs
16
Big Stone
16
Morrison
15
Blue Earth
15
Mower
15
Brown
15
Murray
17
Carlton
15
Nicollet
15
Carver
15
Nobles
17
Cass
17
Norman
16
Chippewa
15
Olmsted
16
Chisago
17
Otter Tail
17
Clay
17
Pennington
17
Clearwater
16
Pine
17
Cook
15
Pipestone
15
Cottonwood
17
Polk
17
Crow Wing
16
Pope
15
Dakota
15
Ramsey
15
Dodge
17
Red Lake
16
Douglas
15
Redwood
15
Faribault
15
Renville
15
Fillmore
15
Rice
15
Freeborn
15
Rock
15
Goodhue
17
Roseau
16
Grant
15
Scott
15
Hennepin
16
Sherburne
15
Houston
15
Sibley
17
Hubbard
17
St Louis
16
Isanti
16
Stearns
17
Itasca
15
Steele
15
Jackson
16
Stevens
16
Kanabec
16
Swift
16
Kandiyohi
16
Todd
17
Kittson
16
Traverse
17
Koochiching
15
Wabasha
15
Lac Qui Parle
17
Wadena
17
Lake
15
Waseca
17
Lake Of The Woods
15
Washington
15
Le Sueur
15
Watonwan
15
Lincoln
17
Wilkin
15
Lyon
15
Winona
17
Mahnomen
16
Wright
15
Yellow Medicine
o
s
m
m
to
w
-4
O
O
2
HI
in
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5
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w
im
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H
O
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o
o
o
m
Zone
County
Zone
County
o
r-
5A
Adams (H)
6B
Leflore (H)
2
5
7B
Alcorn
5A
Lincoln (H)
4B
Amite (H)
6B
Lowndes (H)
S
6B
Attala (H)
6B
Madison (H)
>
7B
Benton
4B
Marion (H)
CO
6B
Bolivar (H)
7B
Marshall
6B
Calhoun (H)
6B
Monroe (H)
6B
Carroll (H)
6B
Montgomery (H)
6B
Chickasaw (H)
6B
Neshoba (H)
6B
Choctaw (H)
6B
Newton (H)
5A
Claiborne (H)
6B
Noxubee (H)
5A
Clarke (H)
6B
Oktibbeha (H)
6B
Clay (H)
7B
Panola
7B
Coahoma
4B
Pearl River (H)
5A
Copiah (H)
5A
Perry (H)
5A
Covington (H)
4B
Pike (H)
7B
De Soto
7B
Pontotoc
5A
Forrest (H)
7B
Prentiss
5A
Franklin (H)
7B
Quitman
4B
George (H)
6B
Rankin (H)
5A
Greene (H)
6B
Scott (H)
6B
Grenada (H)
6B
Sharkey (H)
4B
Hancock (H)
5A
Simpson (H)
4B
Harrison (H)
5A
Smith (H)
6B
Hinds (H)
4B
Stone (H)
6B
Holmes (H)
6B
Sunflower (H)
6B
Humphreys (H)
7B
Tallahatchie
6B
Issaquena (H)
7B
Tate
7B
Itawamba
7B
Tippah
4B
Jackson (H)
7B
Tishomingo
5A
Jasper (H)
7B
Tunica
5A
Jefferson (H)
7B
Union
5A
Jefferson Davis (H)
4B
Walthall (H)
5A
Jones (H)
6B
Warren (H)
6B
Kemper (H)
6B
Washington (H)
7B
Lafayette
5A
Wayne (H)
4B
Lamar (H)
6B
Webster (H)
6B
Lauderdale (H)
4B
Wilkinson (H)
5A
Lawrence (H)
6B
Winston (H)
6B
Leake (H)
7B
Yalobusha
7B
Lee
6B
Yazoo (H)
a. Counties identified with (H) shall be considered "hot and humid climate areas" for purposes of the application of Section 502.1 .1 .
FIGURE 902.1(25)
MISSISSIPPI 3
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1
O
Z
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r-
m
z
rn
s
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(to
m
3B
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1
O
ss
o
o
Zone
12B Adair
12B Andrew
13B Atchison
12B Audrain
Barry
Zone County Zone County
9B
10B Barton
11B Bates
11B Benton
1 0B Bollinger
11B Boone
12B Buchanan
9B Butler
12B Caldwell
11 B Callaway
11 B Camden
9B Cape Girardeau
12B Carroll
10B Carter
Zone County
11 B Cass
11 B Cedar
12B Chariton
10B Christian
13B Clark
11 B Clay
Zone
12B
11B
11B
10B
10B
10B
12B
12B
10B
10B
9B
10B
11B
County
Clinton
Cole
Cooper
Crawford
Dade
Dallas
Daviess
De Kalb
Dent
Douglas
Dunklin
Franklin
Gasconade
Zone
13B
10B
12B
13B
11B
11B
12B
11B
9B
10B
11B
9B
10B
11B
12B
10B
11B
10B
12B
11B
12B
12B
12B
10B
11B
12B
County
Gentry
Greene
Grundy
Harrison
Henry
Hickory
Holt
Howard
Howell
Iron
Jackson
Jasper
Jefferson
Johnson
Knox
Laclede
Lafayette
Lawrence
Lewis
Lincoln
Linn
Livingston
Macon
Madison
Maries
Marion
Zone
9B
13B
11B
9B
11B
12B
11B
11B
9B
9B
13B
9B
11B
9B
9B
10B
11B
10B
12B
11B
10B
10B
13B
12B
12B
11B
County
McDonald
Mercer
Miller
Mississippi
Moniteau
Monroe
Montgomery
Morgan
New Madrid
Newton
Nodaway
Oregon
Osage
Ozark
Pemiscot
Perry
Pettis
Phelps
Pike
Platte
Polk
Pulaski
Putnam
Ralls
Randolph
Ray
Zone
10B
9B
11B
13B
13B
9B
10B
12B
10B
11B
10B
10B
10B
10B
9B
9B
12B
9B
10B
11B
11B
10B
10B
10B
13B
10B
:_Zi Zone9B
S5S Zone 1 0B
Zone 11 B
ES3 Zone12B
Zone 13B
County
Reynolds
Ripley
Saline
Schuyler
Scotland
Scott
Shannon
Shelby
St Charles
St Clair
St Francois
St Louis
St Louis City
Ste Genevieve
Stoddard
Stone
Sullivan
Taney
Texas
Vernon
Warren
Washington
Wayne
Webster
Worth
Wright
■jJ
o
FiGURE 902.1(26)
MIS
m
w
-J
Zone County
Zone County Zone County
Zone County
15 Beaverhead 15 Custer
1 5 Garfield
15
16
15
15
15
15
15
Big Horn
Blaine
Broadwater
Carbon
Carter
Cascade
Chouteau
16
15
16
15
15
16
15
Daniels 16
Dawson 1 5
Deer Lodge 16
Fallon 16
Fergus 15
Flathead 15
Gallatin 15
Glacier
Golden Valley
Granite
Hill
Jefferson
Judith Basin
Lake
16
15
15
15
15
15
Liberty
Lincoln
Madison
McCone
Meagher
Mineral
Zone
County
Zone
County
Zone
County
Zone
County
15
Missoula
16
Powell
16
Sheridan
16
Valley
15
Musselshell
15
Prairie
16
Silver Bow
15
Wheatland
15
Park
15
Ravalli
15
Stillwater
15
Wibaux
15
Petroleum
15
Richland
15
Sweet Grass
15
Yellowstone
16
Phillips
16
Roosevelt
15
Teton
15
Yellowstone
16
Pondera
15
Rosebud
16
Toole
National Park
15
Powder River
15
Sanders
15
Treasure
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m
2
>
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M
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FIGURE 902.1(27)
MONTANA
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5
o
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Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
13B
Adams
13B
Cass
14B
Deuel
13B
Gosper
13B
Johnson
13B
Merrick
13B
Polk
15
Sioux
14B
Antelope
14B
Cedar
14B
Dixon
14B
Grant
13B
Kearney
14B
Morrill
13B
Red Willow
14B
Stanton
14B
Arthur
13B
Chase
13B
Dodge
14B
Greeley
14B
Keith
13B
Nance
13B
Richardson
13B
Thayer
14B
Banner
14B
Cherry
13B
Douglas
13B
Hall
14B
Keya Paha
13B
Nemaha
14B
Rock
14B
Thomas
14B
Blaine
14B
Cheyenne
13B
Dundy
13B
Hamilton
14B
Kimball
13B
Nuckolls
13B
Saline
14B
Thurston
14B
Boone
13B
Clay
13B
Fillmore
13B
Harlan
14B
Knox
13B
Otoe
13B
Sarpy
14B
Valley
15
Box Butte
13B
Colfax
13B
Franklin
13B
Hayes
13B
Lancaster
13B
Pawnee
13B
Saunders
13B
Washington
14B
Boyd
14B
Cuming
13B
Frontier
13B
Hitchcock
14B
Lincoln
13B
Perkins
14B
Scotts Bluff
14B
Wayne
14B
Brown
14B
Custer
13B
Furnas
14B
Holt
14B
Logan
13B
Phelps
13B
Seward
13B
Webster
13B
Buffalo
14B
Dakota
13B
Gage
14B
Hooker
14B
Loup
14B
Pierce
15
Sheridan
14B
Wheeler
14B
Burt
15
Dawes
14B
Garden
14B
Howard
14B
Madison
13B
Platte
14B
Sherman
13B
York
13B
Butler
13B
Dawson
14B
Garfield
13B
Jefferson
14B
McPherson
m
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IIH Zone14B
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FIGURE 902.1(28)
NEBRASKA
3
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m
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Zone
County
12B
Carson City
12B
Churchill
5B
Clark
13B
Douglas
15
Elko
12B
Esmeralda
15
Eureka
13B
Humboldt
13B
Lander
12B
Lincoln
13B
Lyon
12B
Mineral
12B
Nye
12B
Pershing
12B
Storey
12B
Washoe
15
White Pine
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US
Zone 12B
mm
Zone 13B
i
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FIGURE 902.1(29)
NEVADA
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Zone
County
15
Belknap
15
Carroll
15
Cheshire
16
Coos
15
Grafton
15
Hillsborough
15
Merrimack
15
Rockingham
15
Strafford
15
Sullivan
Zone 15
Zone 16
m 902. 1
NEW HAMPSHIRE
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10B
Atlantic
12B
Bergen
11B
Burlington
10B
Camden
10B
Cape May
10B
Cumberland
11B
Essex
10B
Gloucester
11B
Hudson
12B
Hunterdon
11B
Mercer
11B
Middlesex
11B
Monmouth
12B
Morris
11B
Ocean
12B
Passaic
10B
Salem
12B
Somerset
13A
Sussex
11B
Union
12B
Warren
K\\N
Zone 10B
L I
Zone 11 B
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FIGURE 902.1(31)
NEW JERSEY
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9B
Bernalillo
13B
Mckinley
11B
Catron
15
Mora
7B
Chaves
7A
Otero
12B
Cibola
8
Quay
13B
Colfax
12B
Rio Arriba
9B
Curry
8
Roosevelt
9B
De Baca
12B
San Juan
7A
Dona Ana
12B
San Miguel
/B
Eddy
13B
Sandoval
9B
Grant
13B
Santa Fe
9B
Guadalupe
8
Sierra
11B
Harding
9B
Socorro
7A
Hidalgo
15
Taos
7B
Lea
11B
Torrance
9B
Lincoln
11B
Union
13B
Los Alamos
10B
Valencia
7A
Luna
V//A
Zone 7A
m
Zone 7B
km
Zone 8
Zone 9B
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Zone 10B
nu
Zone 11 B
fo;ii.»j
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WCh
Zone 13B
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Zone 1 5
FIGURE 902.1(32)
NEW MEXICO
o
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Zone12BKffl Zone 16
Zone 13A
Zone
County
Zone
County
14A
Albany
14A
Niagara
15
Allegany
15
Oneida
11B
Bronx
14A
Onondaga
15
Broome
14A
Ontario
15
Cattaraugus
12B
Orange
14A
Cayuga
14A
Orleans
14A
Chautauqua
14A
Oswego
15
Chemung
15
Otsego
15
Chenango
12B
Putnam
15
Clinton
10B
Queens
14A
Columbia
14A
Rensselaer
15
Cortland
11B
Richmond
15
Delaware
12B
Rockland
13A
Dutchess
14A
Saratoga
14A
Erie
14A
Schenectady
16
Essex
15
Schoharie
16
Franklin
15
Schuyler
15
Fulton
14A
Seneca
14A
Genesee
15
St Lawrence
14A
Greene
15
Steuben
16
Hamilton
11B
Suffolk
15
Herkimer
15
Sullivan
15
Jefferson
15
Tioga
10B
Kings
15
Tompkins
15
Lewis
15
Ulster
14A
Livingston
15
Warren
14A
Madison
15
Washington
14A
Monroe
14A
Wayne
14A
Montgomery
12B
Westchester
11B
Nassau
14A
Wyoming
10B
New York
14A
Yates
2
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m
2
>
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W
o
o
o
rn
FIGURE 902.1(33)
NEW YORK
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m
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2
5
2
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2
W
rn
<
o
2
o
o
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
8
Alamance
8
Caldwell
7A
Currituck
7A
Greene
7A
Lee
6B
New Hanover (H)
7A
Richmond
6B
Tyrrell (H)
8
Alexander
7A
Camden
6B
Dare (H)
8
Guilford
7A
Lenoir
7A
Northampton
7A
Robeson
7A
Union
11A
Alleghany
6B
Carteret (H)
8
Davidson
7A
Halifax
7A
Lincoln
6B
Onslow (H)
8
Rockingham
8
Vance
7A
Anson
8
Caswell
8
Davie
7A
Harnett
9B
Macon
8
Orange
7A
Rowan
7A
Wake
11A
Ashe
8
Catawba
6B
Duplin (H)
9B
Haywood
9B
Madison
6B
Pamlico (H)
7A
Rutherford
8
Warren
11A
Avery
8
Chatham
8
Durham
9B
Henderson
7A
Martin
7A
Pasquotank
6B
Sampson (H)
7A
Washington
6B
Beaufort (H)
9B
Cherokee
7A
Edgecombe
7A
Hertford
8
McDowell
6B
Pender (H)
7A
Scotland
11A
Watauga
7A
Bertie
7A
Chowan
8
Forsyth
7A
Hoke
7A
Mecklenburg
7A
Perquimans
7A
Stanly
7A
Wayne
6B
Bladen (H)
9B
Clay
8
Franklin
6B
Hyde (H)
11A
Mitchell
8
Person
9B
Stokes
9B
Wilkes
6B
Brunswick (H)
7A
Cleveland
7A
Gaston
8
Iredell
7A
Montgomery
7A
Pitt
9B
Surry
7A
Wilson
9B
Buncombe
6B
Columbus (H)
7A
Gates
9B
Jackson
7A
Moore
7A
Polk
9B
Swain
8
Yadkin
8
Burke
6B
Craven (H)
9B
Graham
7A
Johnston
7A
Nash
8
Randolph
9B
Transylvania
11A
Yancey
7A
Cabarrus
7A
Cumberland
8
Granville
6B
Jones (H)
-J
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a. Counties identified with (H) shall be considered "hot and humid climate areas" for purposes of the application of Section 502.1 .1 .
FIGURE 902.11(34)
O
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rn
Zone
County
Zone
County
16
Adams
16
Burleigh
17
Barnes
17
Cass
17
Benson
17
Cavalier
16
Billings
16
Dickey
17
Bottineau
17
Divide
16
Bowman
16
Dunn
17
Burke
17
Eddy
Zone
County
16
Emmons
17
Foster
16
Golden Valley
17
Grand Forks
16
Grant
17
Griggs
16
Hettinger
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
17
Kidder
16
Mercer
17
Ramsey
17
Sheridan
17
Towner
16
La Moure
16
Morton
16
Ransom
16
Sioux
17
Traill
16
Logan
17
Mountrail
17
Renville
16
Slope
17
Walsh
17
McHenry
17
Nelson
16
Richland
16
Stark
17
Ward
16
Mcintosh
16
Oliver
17
Rolette
17
Steele
17
Wells
16
McKenzie
17
Pembina
16
Sargent
17
Stutsman
17
Williams
17
McLean
17
Pierce
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■■■■■■ :,. :-:-: ,: :■■:■■: £«= :7. V..: .•: .:. . .:. , .: > : .■,:■■:: .-.: ■ : .: :;&■:■:■:■£:■:■::■:;. V.ii .::■::■■ \: :.:.:. :.! :*. :-. A.,::. : .-:,-: :::..::: ■•.■.:■ *'■:.: .: • . >.-. :■ : ■ : .>.-:■.. •: ■ ■:■:■: :
Zone 16
Zone 17
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FIGURE 902.1(35)
NORTH DAKOTA
o
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m
33
S)
<
a
o
s
CO
m
H
~H1 Zone11B
Zone 12A
Zone 12B
Zone 13A
^m Zone13B
I Zone 14A
Zone
County
Zone
County
11B
Adams
12B
Licking
13B
Allen
13A
Logan
13A
Ashland
13A
Lorain
13A
Ashtabula
14A
Lucas
11B
Athens
12B
Madison
13B
Auglaize
13A
Mahoning
12A
Belmont
13A
Marion
11B
Brown
13A
Medina
12B
Butler
11B
Meigs
13A
Carroll
13B
Mercer
13A
Champaign
13A
Miami
13A
Clark
12A
Monroe
11B
Clermont
12B
Montgomery
12B
Clinton
12A
Morgan
13A
Columbiana
13A
Morrow
12B
Coshocton
12B
Muskingum
13A
Crawford
12A
Noble
13A
Cuyahoga
13A
Ottawa
13A
Darke
14A
Paulding
14A
Defiance
12A
Perry
13A
Delaware
12B
Pickaway
13A
Erie
11B
Pike
12A
Fairfield
13A
Portage
12B
Fayette
12B
Preble
12B
Franklin
13B
Putnam
14A
Fulton
13A
Richland
11B
Gallia
12B
Ross
13A
Geauga
13A
Sandusky
12B
Greene
11B
Scioto
12B
Guernsey
13A
Seneca
11B
Hamilton
13A
Shelby
13A
Hancock
13A
Stark
13A
Hardin
13A
Summit
13A
Harrison
13A
Trumbull
14A
Henry
13A
Tuscarawas
11B
Highland
13A
Union
12A
Hocking
13B
Van Wert
13A
Holmes
11B
Vinton
13A
Huron
12B
Warren
11B
Jackson
11B
Washington
13A
Jefferson
13A
Wayne
13A
Knox
14A
Williams
13A
Lake
14A
Wood
11B
Lawrence
13A
Wyandot
FIGURE 902.1(38)
O
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s
5
m
m
"0
m
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
8
Adair
8
Cherokee
8
Delaware
7B
Haskell
7B
Lincoln
7B
Muskogee
8
Payne
7B
Stephens
9B
Alfalfa
6B
Choctaw (H)
9B
Dewey
7B
Hughes
8
Logan
8
Noble
7B
Pittsburg
10B
Texas
7B
Atoka
10B
Cimarron
9B
Ellis
7B
Jackson
6B
Love (H)
9B
Nowata
7B
Pontotoc
7B
Tillman
10B
Beaver
7B
Cleveland
8
Garfield
6B
Jefferson (H)
9B
Major
7B
Okfuskee
7B
Pottawatomie
8
Tulsa
8
Beckham
7B
Coal
7B
Garvin
6B
Johnston (H)
6B
Marshall (H)
8
Oklahoma
6B
Pushmataha (H)
8
Wagoner
8
Blaine
7B
Comanche
7B
Grady
9B
Kay
8
Mayes
8
Okmulgee
9B
Roger Mills
9B
Washington
7B
Bryan
7B
Cotton
9B
Grant
8
Kingfisher
7B
McClain
8
Osage
9B
Rogers
8
Washita
8
Caddo
9B
Craig
7B
Greer
7B
Kiowa
7B
McCurtain
9B
Ottawa
7B
Seminole
9B
Woods
8
Canadian
8
Creek
7B
Harmon
7B
Latimer
7B
Mcintosh
8
Pawnee
7B
Sequoyah
9B
Woodward
6B
Carter (H)
8
Custer
9B
Harper
7B
Le Flore
7B
Murray
o
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>
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O
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30
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a. Counties identified with (H) shall be considered "hot and humid climate areas" for purposes of the application of Section 502. 1.1.
FIGURE 902.1(37)
OKLAHOMA 3
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I
HI
m
5B
o
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r-
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o
2
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o
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.vfi<//A . .. ;
I
Zone
County
15
Baker
10A
Benton
10A
Clackamas
11A
Clatsop
11A
Columbia
9A
Coos
14A
Crook
9A
Curry
14A
Deschutes
9A
Douglas
12A
Gilliam
15
Grant
15
Harney
12A
Hood River
11A
Jackson
13B
Jefferson
9A
Josephine
14A
Klamath
15
Lake
10A
Lane
11A
Lincoln
10A
Linn
12B
Malheur
10A
Marion
12A
Morrow
10A
Multnomah
10A
Polk
13B
Sherman
11A
Tillamook
12A
Umatilla
13B
Union
15
Wallowa
13B
Wasco
10A
Washington
13B
Wheeler
10A
Yamhill
V///
Zone 9A
\$$k~
Zone 10A
i
Zone 11 A
L . *
! Zone12A'
cz
] Zone12B|
'fffp.
Zone 13B
GZ
Zone 14A I
en
Zone 15 I
FIGURE 902.1 (38)
O
S
>
m
m
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
r
11B
Adams
13B
Blair
13B
Carbon
13B
Columbia
14A
Erie
12B
Huntingdon
14A
Lawrence
14A
Mercer
m
>
12A
Allegheny
15
Bradford
13B
Centre
14A
Crawford
12A
Fayette
13B
Indiana
12B
Lebanon
12B
Mifflin
13B
Armstrong
11B
Bucks
11B
Chester
12B
Cumberland
15
Forest
15
Jefferson
12B
Lehigh
13B
Monroe
rn
>
12A
Beaver
14A
Butler
14A
Clarion
12B
Dauphin
11B
Franklin
12B
Juniata
13B
Luzerne
11B
Montgomery
13B
Bedford
13B
Cambria
15
Clearfield
10B
Delaware
12B
Fulton
14A
Lackawanna
13B
Lycoming
13B
Montour
12B
Berks
15
Cameron
13B
Clinton
15
Elk
12A
Greene
11B
Lancaster
15
McKean
12B
13B
12B
10B
13B
15
13B
13B
13B
14A
15
15
13B
14A
14A
Northampton
Northumberland
Perry
Philadelphia
Pike
Potter
Schuylkill
Snyder
Somerset
Sullivan
Susquehanna
Tioga
Union
Venango
Warren
. j
>-?:.:
,
., .
-':'■'•',..
12A
Washington
lllff
|tf : .;-..- ■,..-„: ,: ..:
J.:
•l:?;rt:L
i —
™i:.;:ii : I-;
15
13B
14A
Wayne
Westmoreland
Wyoming
\
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mam
11B
York
s
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3B
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o
rn
S£Z
FIGURE 902.1(39)
PENNSYLVANIA
fc^l ZonelOB
Zone 11B
:;■ Zone12A
Zone 12B
Zone 13B
Zone 14A
Zone 15
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1
rn
=i
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CO
m
m
Zone Coonty
12A Bristol
12A Kent
12A Newport
14A Providence
12A Washington
Zone 12A
Zone 14A
FIGURE 902,
RHODE 1SI
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85
m
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•v
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z
m
a
<
a
o
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m
3
<
HI
s
2
O
o
Zona
i County
Zone
County
7A
Abbeville
7A
Greenwood
6B
Aiken (H)
5A
Hampton (H)
5A
Allendale (H)
5A
Horry (H)
7A
Anderson
5A
Jasper (H)
5A
Bamberg (H)
7A
Kershaw
5A
Barnwell (H)
7A
Lancaster
5A
Beaufort (H)
7A
Laurens
5A
Berkeley (H)
6B
Lee (H)
6B
Calhoun (H)
6B
Lexington (H)
5A
Charleston (H)
6B
Marion (H)
7A
Cherokee
6B
Marlboro (H)
7A
Chester
6B
McCormick (H)
7A
Chesterfield
6B
Newberry (H)
6B
Clarendon (H)
7A
Oconee
5A
Colleton (H)
6B
Orangeburg (H)
6B
Darlington (H)
7A
Pickens
6B
Dillon (H)
6B
Richland (H)
5A
Dorchester (H)
6B
Saluda (H)
6B
Edgefield (H)
7A
Spartanburg
7A
Fairfield
6B
Sumter (H)
6B
Florence (H)
7A
Union
5A
Georgetown (H)
6B
Williamsburg (H)
7A
Greenville
7A
York
[a a. Counties identified with (H) shall be considered "hot and humid climate areas" for purposes of the application of Section 502.1 .1 .
Illlllllll Zone 5A
KWi Zone 6B
Vm Zone 7A
FIGURE 902.1(41)
SOUTH CAROLINA 3
O
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-1
HI
o
Z
s»
T-
m
z
m
©
o
o
z
w
m
O
s
o
o
o
Zone County
1 5 Aurora
Zone County
15 Brule
15 Beadle 15 Buffalo
14B Bennett 15 Butte
14B Bon Homme 15 Campbell
16 Brookings 14B Charles Mix
16 Brown
16
Clark
Zone County
14B Clay
16
15
15
15
16
Codington
Corson
Custer
Davison
Day
Zone County
16 Deuel
1 5 Dewey
14B Douglas
15 Edmunds
15 Fall River
15 Faulk
Zone County
16 Grant
14B Gregory
1 5 Haakon
16 Hamlin
15 Hand
15 Hanson
Zone County
15 Harding
15 Hughes
14B Hutchinson
15 Hyde
14B Jackson
15 Jerauld
Zone County
i
15
15
15
15
15
15
Jones
Kingsbury
Lake
Lawrence
Lincoln
Lyman
Zone County
16 Marshall
15 McCook
16 McPherson
15 Meade
14B Mellette
15 Miner
15 Minnehaha
15 Moody
15 Pennington
15 Perkins
15 Potter
16 Roberts
15 Sanborn
15 Shannon
15 Spink
15 Stanley
15 Sully
14B Todd
14B Tripp
1 5 Turner
14B Union
15 Walworth
14B Yankton
15 Ziebach
^^ Zone 14B
. J Zone 15
Zone 16
o
03
FIGURE 902.1(42)
SOUTH DAKOTA
m
w
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
9B
Anderson
10B
Claiborne
10B
Fentress
9B
Hawkins
8
Lauderdale
8
Meigs
9B
Roane
9B
Trousdale
8
Bedford
9B
Clay
8
Franklin
8
Haywood
8
Lawrence
8
Monroe
9B
Robertson
10B
Unicoi
9B
Benton
9B
Cocke
9B
Gibson
8
Henderson
8
Lewis
9B
Montgomery
8
Rutherford
9B
Union
8
Bledsoe
8
Coffee
8
Giles
9B
Henry
8
Lincoln
8
Moore
10B
Scott
9B
Van Buren
8
Blount
8
Crockett
9B
Grainger
9B
Hickman
8
Loudon
10B
Morgan
8
Sequatchie
9B
Warren
8
Bradley
9B
Cumberland
9B
Greene
9B
Houston
9B
Macon
9B
Obion
9B
Sevier
9B
Washington
10B
Campbell
8
Davidson
9B
Grundy
9B
Humphreys
8
Madison
9B
Overton
7B
Shelby (H)
8
Wayne
9B
Cannon
9B
De Kalb
9B
Hamblen
9B
Jackson
8
Marion
8
Perry
9B
Smith
9B
Weakley
9B
Carroll
8
Decatur
8
Hamilton
9B
Jefferson
8
Marshall
10B
Pickett
9B
Stewart
9B
White
10B
Carter
9B
Dickson
10B
Hancock
10B
Johnson
9B
Maury
8
Polk
9B
Sullivan
8
Williamson
9B
Cheatham
8
Dyer
8
Hardeman
8
Knox
8
McMinn
9B
Putnam
9B
Sumner
9B
Wilson
8
Chester
7B
Fayette (H)
8
Hardin
9B
Lake
8
McNairy
8
Rhea
8
Tipton
o
f-
m
3
>
w
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m
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>
•J
o
m
33
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o
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>
O i a. Counties identified with (H) shall be considered "hot and humid climate areas" for purposes of the application of Section 502.1 .1 .
o
o
o
m
FIGURE 902.1(43)
TEMNESSEE 3
o
o
Zone
County
Zone County
Zone
bounty
Zone
County
2
one CounSy
Zoos
County
Zone
County
Zone
> County
td
5A
Anderson (H)
6B
Callahan 4B Comal (H) 6B Denton 7B Gaines
5B
Henderson (H)
5B
Mason (H)
5B
San Saba (H)
6B
Andrews
2B
Cameron (H) 5B Comanche (H) 7B Dickens 3B Galveston (H)
2B
Hidalgo (H)
3B
Matagorda (H)
5B
Schleicher (H)
in
3D
5A
Angelina (H)
6B
Camp 5B Concho (H) 3C Dimmit (H) 7B Garza
5B
Hill (H)
3C
Maverick (H)
7B
Scurry
s
5
3B
Aransas (H)
9B
Carson 6B Cooke 8 Donley 5A Gillespie (H)
8
Hockley
5B
McCulloch (H)
6B
Shackelford
7B
Archer
6B
Cass 5B Coryell (H) 3C Duval (H) 6B Glasscock
5B
Hood (H)
5B
McLennan (H)
5A
Shelby (H)
o
"3.
9B
Armstrong
9B
Castro 7B Cottle 6B Eastland 3B Goliad (H)
6B
Hopkins
3C
McMullen (H)
9B
Sherman
>
3C
Atascosa (H)
4B
Chambers (H) 5B Crane (H) 6B Ector 4B Gonzales (H)
5A
Houston (H)
4B
Medina (H)
5B
Smith (H)
m
4B
Austin (H)
5A
Cherokee (H) 5B Crockett (H) 5A Edwards (H) 9B Gray
6B
Howard
5B
Menard (H)
5B
Somervell (H)
2
9B
Bailey
7B
Childress 7B Crosby 6B El Paso 6B Grayson
6B
Hudspeth
6B
Midland (H)
2B
Starr (H)
3S
5A
Bandera (H)
7B
Clay 6B Culberson 5B Ellis (H) 6B Gregg
6B
Hunt
4B
Milam (H)
6B
Stephens
4B
Bastrop (H)
8
Cochran 9B Dallam 6B Erath 4B Grimes (H)
9B
Hutchinson
5B
Mills (H)
6B
Sterling
o
o
7B
Baylor
6B
Coke 5B Dallas (H) 5B Falls (H) 4B Guadalupe (H)
5B
Irion (H)
6B
Mitchell
7B
Stonewall
2
3B
Bee (H)
5B
Coleman (H) 7B Dawson 6B Fannin 8 Hale
6B
Jack
6B
Montague
5A
Sutton (H)
03
5B
Bell (H)
6B
Collin 3C DeWitt(H) 4B Fayette (H) 8 Hall
3B
Jackson (H)
4B
Montgomery (H)
8
Swisher
5S
<
4B
Bexar (H)
7B
Collingsworth 9B Deaf Smith 6B Fisher 5B Hamilton (H)
5A
Jasper (H)
9B
Moore
5B
Tarrant (H)
3s>
=5
5A
Blanco (H)
4B
Colorado (H) 6B Delta 8 Floyd 9B Hansford
6B
Jeff Davis
6B
Morris
6B
Taylor
O
7B
Borden
7B Foard 7B Hardeman
4B
Jefferson (H)
7B
Motley
5A
Terrell (H)
2
O
O
5B
Bosque (H)
4B Fort Bend (H) 4B Hardin (H)
2B
Jim Hogg (H)
5A
Nacogdoches (H)
7B
Terry
6B
3B
4B
5A
8
2B
Bowie
Brazoria (H)
Brazos (H)
Brewster (H)
Briscoe
Brooks (H)
6B Franklin 4B Harris (H)
| 5B Freestone (H) 6B Harrison
3C
5B
6B
3C
6B
5A
Jim Wells (H)
Johnson (H)
Jones
Karnes (H)
Kaufman
Kendall (H)
5B
5A
6B
3B
9B
9B
Navarro (H)
Newton (H)
Nolan
Nueces (H)
Ochiltree
Oldham
6B
6B
5B
5B
5A
5A
Throckmorton
Titus
Tom Green (H)
Travis (H)
Trinity (H)
Tyler (H)
O
m
®
|
■f$-y;w
1 3C Frio(H) 9B Hartley
| 6B Haskell
i 5B Hays (H)
1
Hi?
WaM.
•
,,
§L 9B Hemphill
5B
Brown (H)
Burleson (H)
lllpllfe"
= ^L^=^j^^-p^ ^ ^ ^ ^ ^^_
2B
Kenedy (H)
4B
Orange (H)
6B
Upshur
f l„f A ^ Jt IV
4B
— =^, — j
JxEaSfiFiafE
Pff
7B
Kent
6B
Palo Pinto
5B
Upton (H)
5A
Burnet (H)
~Wwir
SmJ
5A
Kerr (H)
5A
Panola (H)
4B
Uvalde (H)
4B
Caldwell (H)
ipit
^^«
Si
IBB
5A
Kimble (H)
6B
Parker
4B
Val Verde (H)
3B
Calhoun (H)
"¥nfw
ipi^f ffttf
ip
7B
4B
2B
King
Kinney (H)
Kleberg (H)
9B
5A
5A
Parmer
Pecos (H)
Polk (H)
6B
3B
4B
Van Zandt
Victoria (H)
Walker (H)
ijii ii /■ i\
«^j
^Mtttfa
ilillll
Ty '/y.^-
HI
pi
WimMw
7B
3C
6B
8
5B
4B
4B
5B
4B
Knox
La Salle (H)
Lamar
Lamb
Lampasas (H)
Lavaca (H)
Lee (H)
Leon (H)
Liberty (H)
9B
5A
6B
9B
5B
5A
6B
6B
3B
Potter
Presidio (H)
Rains
Randall
Reagan (H)
Real (H)
Red River
Reeves
Refugio (H)
4B
6B
4B
3C
3B
9B
7B
7B
2B
Waller (H)
Ward
Washington (H)
Webb (H)
Wharton (H)
Wheeler
Wichita
Wilbarger
Willacy (H)
if
'fW/,
xfl|H3 !
\ V
Ill 1HW1
Wrf
liil
•
v
||f
W
•'3^
G3 Zone2B MB Zone5B
" < ty
\/ /■'
1
'M
H~3 Zone3B ■££ Zone6B
V77A Zone 3C mi Zone 7B
in
,;;
5B
Limestone (H)
9B
Roberts
5B
Williamson (H)
m Zone4B EiH Zone 8
Y *
9B
Lipscomb
4B
Robertson (H)
4B
Wilson (H)
PH Zone 5A EH! Zone 9B
\ 4
3C
5B
Live Oak (H)
Llano (H)
6B
5B
Rockwall
Runnels (H)
6B
6B
Winkler
Wise
6B
Loving
5B
Rusk (H)
6B
Wood
o
I a. Counties identified with (
H) shall be considered "hot and humid climate areas"
7B
Lubbock
5A
Sabine (H)
8
Yoakum
S
1 for
purposes of the applic
ation of Section 502.1.1.
7B
Lynn
5A
San Augustine (H)
6B
Young
>
4B
Madison (H)
4B
San Jacinto (H)
2B
Zapata (H)
m
TEXAS 3
6B
6B
Marion
Martin
3C
San Patricio (H)
3C
Zavala (H)
§
^^\ \\\\\\\\\\ ^\\ \\\^^
Zone
County
14B
Beaver
12B
Box Elder
15
Cache
14B
Carbon
15
Daggett
12B
Davis
15
Duchesne
14B
Emery
14B
Garfield
10B
Grand
12B
Iron
12B
Juab
10B
Kane
13B
Millard
15
Morgan
13B
Piute
15
Rich
12B
Salt Lake
13B
San Juan
14B
Sanpete
13B
Sevier
15
Summit
12B
Tooele
15
Uintah
12B
Utah
15
Wasatch
10B
Washington
14B
Wayne
12B
Weber
fc^
Zone 10B
EES
Zone 12B
^m
Zone 13B
i=j
Zone 14B
L J
Zone 15
FIGURE 902.1(45)
UTAH
5
m
3
©
<
O
s
<
=1
o
2
o
o
o
1 'S? {?■■ "KW.Ki.i
Zone
County
15
Addison
15
Bennington
16
Caledonia
15
Chittenden
16
Essex
15
Franklin
15
Grand Isle
16
Lamoille
16
Orange
16
Orleans
15
Rutland
16
Washington
15
Windham
15
Windsor
Zone 15
Zone 16
FIGURE 902.1(45)
VERMONT
©
u
2
H
m
2
5*
r=
rn
z
<
a
o
z
>
o
2
O
o
o
m
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
Zone
County
i-
8
Accomack
9B
Campbell
11B
Floyd
8
Isle Of Wight
11B
Montgomery
10B
Orange
10B
Prince William
10B
Scott
S.
>
9B
Albemarie
9B
Caroline
9B
Fluvanna
8
James City
8
Nansemond
11B
Page
11B
Pulaski
11B
Shenandoah
10B
Alleghany
11B
Carroll
10B
Franklin
9B
King And Queen
9B
Nelson
10B
Patrick
11B
Rappahannock
11B
Smyth
2
9B
Amelia
8
Charles City
11B
Frederick
9B
King George
8
New Kent
9B
Pittsylvania
8
Richmond
8
Southampton
>
9B
Amherst
9B
Charlotte
10B
Giles
9B
King William
8
Northampton
9B
Powhatan
9B
Roanoke
10B
Spotsylvania
CO
9B
Appomattox
8
Chesterfield
8
Gloucester
8
Lancaster
8
Northumberland
9B
Prince Edward
9B
Rockbridge
10B
Stafford
10B
Arlington
11B
Clarke
9B
Goochland
10B
Lee
9B
Nottoway
8
Prince George
11B
Rockingham
8
Surry
11B
Augusta
10B
Craig
11B
Grayson
10B
Loudoun
10B
Russell
8
Sussex
11B
Bath
10B
Culpeper
10B
Greene
9B
Louisa
11B
Tazewell
9B
Bedford
9B
Cumberland
8
Greensville
9B
Lunenburg
11B
Warren
11B
Bland
10B
Dickenson
9B
Halifax
11B
Madison
11B
Washington
9B
Botetourt
8
Dinwiddie
9B
Hanover
8
Mathews
8
Westmoreland
8
Brunswick
9B
Essex
8
Henrico
9B
Mecklenburg
10B
Wise
10B
Buchanan
10B
Fairfax
10B
Henry
8
Middlesex
11B
Wythe
9B
Buckingham
10B
Fauquier
11B
Highland
8
York
Zone 8
^cSX^
««
[ | Zone SB
KS^NH Zone 10B
Zone 11B
Independent Cities
Zone City
10B Alexandria
9B Bedford
11B Bristol
9B Buena Vista
9B Charlottesville 8
8 Chesapeake
Zone City
1 0B Clifton Forge
Zone City
10B Fairfax
8 Colonial Heights 10B Falls Church
10B Covington
9B Danville
Emporia
8
Franklin
Zone City Zone City Zone City
8 Hampton 10B Manassas 10B Norton
11B Harrisonburg 10B Manassas Park 8 Petersburg
8 Hopewell 10B Martinsville 8 Poquoson
Zone City
8 Richmond
Roanoke
Salem
9B
9B
Zone City
8 Suffolk
8 Virginia Beach
11 B Waynesboro
10B Fredericksburg 9B
11 B Galax 9B
Lexington
Lynchburg
8
Newport News
Norfolk
8
8 Portsmouth 9B South Boston 8 Williamsburg
11 B Radford 11B Staunton 11 B Winchester
FIGURE 902.1(47)
VIRGINIA
to
e
2
-a
H
O
2
3*
1=
m
ra
<
o
o
z
(ffl
m
a
<
3B>
H
o
2
O
o
o
ra
K^
Zone 10A|fi2U
Zone 12B
^^
Zone 11AEE3
Zone14A
ZoneHBI I
Zone 12A
Zone 15
Zone
County
12B
Adams
12A
Asotin
11B
Benton
12B
Chelan
12A
Clallam
11A
Clark
12A
Columbia
11A
Cowlitz
14A
Douglas
15
Ferry
11B
Franklin
12A
Garfield
12B
Grant
11A
Grays Harbor
12A
Island
11A
Jefferson
10A
King
11A
Kitsap
14A
Kittitas
12A
Klickitat
11A
Lewis
15
Lincoln
11A
Mason
15
Okanogan
11A
Pacific
15
Pend Oreille
11A
Pierce
12A
San Juan
11A
Skagit
11A
Skamania
11A
Snohomish
14A
Spokane
15
Stevens
11A
Thurston
11A
Wahkiakum
11B
Walla Walla
12A
Whatcom
14A
Whitman
12A
Yakima
o
r-
FIGURE 902.1(48)
-4
m
s
w
o
r-
Zone 12A
Zone 13A
O
e
m
Z
5
m
z
m
■<
O
o
Z
CO
m
<
o
O
o
o
m
m
>
Zone
County
Zone
County
Zone
County
13A
Barbour
10B
Kanawha
13A
Pocahontas
11B
Berkeley
12A
Lewis
13A
Preston
10B
Boone
10B
Lincoln
10B
Putnam
11B
Braxton
10B
Logan
12A
Raleigh
12A
Brooke
12A
Marion
13A
Randolph
10B
Cabell
12A
Marshall
11B
Ritchie
11B
Calhoun
11B
Mason
11B
Roane
11B
Clay
11B
Mcdowell
12A
Summers
12A
Doddridge
11B
Mercer
12A
Taylor
12A
Fayette
12A
Mineral
13A
Tucker
11B
Gilmer
10B
Mingo
11B
Tyler
13A
Grant
12A
Monongalia
12A
Upshur
12A
Greenbrier
11B
Monroe
10B
Wayne
11B
Hampshire
11B
Morgan
12A
Webster
12A
Hancock
12A
Nicholas
12A
Wetzel
12A
Hardy
12A
Ohio
11B
Wirt
12A
Harrison
13A
Pendleton
11B
Wood
11B
Jackson
11B
Pleasants
11B
Wyoming
11B
Jefferson
FIGURE 902.1(49)
WEST VIRGINIA
so
©
o
w
-i
m
3
Z
>
O
2
W
m
a
o
o
rn
Zone 1 5
Zone 16
Zone 17
Zone
CounSy
Zone
County
15
Adams
15
Marathon
17
Ashland
15
Marinette
16
Barron
15
Marquette
17
Bayfield
15
Menominee
15
Brown
15
Milwaukee
15
Buffalo
15
Monroe
17
Burnett
15
Oconto
15
Calumet
17
Oneida
15
Chippewa
15
Outagamie
15
Clark
15
Ozaukee
15
Columbia
15
Pepin
15
Crawford
15
Pierce
15
Dane
16
Polk
15
Dodge
15
Portage
15
Door
17
Price
17
Douglas
15
Racine
15
Dunn
15
Richland
15
Eau Claire
15
Rock
17
Florence
16
Rusk
15
Fond Du Lac
15
Sauk
17
Forest
17
Sawyer
15
Grant
15
Shawano
15
Green
15
Sheboygan
15
Green Lake
15
St Croix
15
Iowa
17
Taylor
17
Iron
15
Trempealeau
15
Jackson
15
Vernon
15
Jefferson
17
Vilas
15
Juneau
15
Walworth
15
Kenosha
17
Washburn
15
Kewaunee
15
Washington
15
La Crosse
15
Waukesha
15
Lafayette
15
Waupaca
17
Langlade
15
Waushara
17
Lincoln
15
Winnebago
15
Manitowoc
15
Wood
o
FIGURE 902.1(50)
WOSCQNSON
m
O)
O
©
s
-4
m
35
Z
>
o
2
>
r-
m
z
m
33
D
<
O
o
z
ss
m
39
Zone
County
16
Albany
15
Big Horn
15
Campbell
16
Carbon
15
Converse
15
Crook
15
Fremont
14B
Goshen
15
Hot Springs
15
Johnson
15
Laramie
17
Lincoln
15
Natrona
15
Niobrara
15
Park
14B
Platte
15
Sheridan
17
Sublette
16
Sweetwater
17
Teton
16
Uinta
15
Washakie
15
Weston
Zone 14B
Zone 15
Zone 16
1 Zone 17
o
■z
o
o
o
FIGURE 902.1(51)
WYOMING
O
i-
>
m
S
>
T3
V)
REFERENCED STANDARDS
This chapter lists the standards that are referenced in various sections of this document. The standards are listed herein by the
promulgating agency of the standard, the standard identification, the effective date and title, and the section or sections of this
document that reference the standard. The application of the referenced standards shall be as specified in Section 107.
American Architectural Manufacturers Association
1827 Walden Office Square
Suite 104
Schaumburg, IL 60173-4268
Standard
reference
number
Title
Referenced
in code
section number
101/I.S.2— 97
101/I.S.2/NAFS— 02
Voluntary Specifications for Aluminum, Vinyl (PVC) and Wood Windows
and Glass Doors
Voluntary Performance Specification for Windows, Skylights and Glass Doors.
. Table 502.1.4.1, 601.3.2.2, 802.3.1
802.3.1
Air Movement and Control Association International
30 West University Drive
Arlington Heights, IL 60004-1806
Standard
reference
number
Title
Referenced
in code
section number
500—89
Test Methods for Louvers, Dampers, and Shutters 802.3.4
American National Standards Institute
25 West 43rd Street
Fourth Floor
New York, NY 10036
Referenced
in code
Title section number
Gas Water Heaters, Volume M - Storage Water Heaters with Input Ratings Above 75,000 Btu per Hour,
Circulating Tank and Instantaneous— with Addenda Z21.10.3a-99 Table 504.2.1, Table 804.2
Gas-Fired Low-Pressure Steam and Hot Water Boilers Table 803.2.2(5)
Gas-Fired Central Furnaces— with Addenda Z21.47a-2000 Table 803.2.2(4)
Gas-Fired Pool Heaters— with Z21.56a— with Addenda-1999 Table 504.2.1
Gas Unit Heaters— with Addendum Z83.8a-1997 Table 803.2.2(4)
Gas-fired Duct Furnaces Table 803.2.2(4)
Standard
reference
number
Z21.10.3— 98
Z21.13— 99
Z2 1.47— 00
Z2 1.56— 98
Z83.8— 96
Z83.9— 96
Air Conditioning and Refrigeration Institute
4301 North Fairfax Drive
Suite 200
Arlington, VA 22203
Referenced
in code
Title section number
Unitary Air-Conditioning and Air-Source Heat Pump Equipment Table 503.2,
Table 803.2.2(1), Table 803.2.2(2)
Standard for Packaged Terminal Air-Conditioning and Heat Pumps 202, Table 803.2.2(3)
Ground Water-Source Heat Pumps Table 803.3.2(2)
Commercial and Industrial Unitary Air-Conditioning and Heat Pump
Equipment Table 803.2.2(1), Table 803.2.2(2)
Commercial and Industrial Unitary Air-Conditioning Condensing Units Table 803.3.2(1)
Remote Mechanical-Draft Air-Cooled Refrigerant Condensers Table 803.3.2(6)
Water Chilling Packages Using the Vapor Compression Cycle Table 803.3.2(2)
Standard
reference
number
210/240—94
310/380—93
325—98
340/360—2000
365—94
460-94
550/590—98
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
197
REFERENCED STANDARDS
560—92
13256-1 (1998)
ARI — continued
Absorption Water Chilling and Water Heating Packages Table 803.3.2(2)
Water-source Heat Pumps - Testing and Rating for Performance - Part 1: Water-to- Air and
Brine-to- Air Heat Pumps Table 803.2.2(2)
SlIB A 1
flJvriJ
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.
1791 Tullie Circle, NE
Atlanta, GA 30329-2305
Referenced
in code
Title section number
A Method of Determining Air Change Rates in Detached Dwellings 402.2.3.9
Testing and Rating Pool Heaters Table 804.2
Water-source Heat Pumps - Testing and Rating for Performance - Part 1 : Water-to- Air and
Brine-to- Air Heat Pumps Table 803.2.2(2)
Thermal Environmental Conditions for Human Occupancy 202
Energy Standard for Buildings Except Low-Rise Residential Buildings 701.1, 801.2, 802. 1, 802.2
ASHRAE HVAC Applications Handbook-1999 504.2.2
ASHRAE Fundamentals Handbook- 2001 Table 302.1, 402.4.2, 502.2.1.1.2,
502.2.2,503.3.1,803.2.1
ASHRAE HVAC Systems and Equipment Handbook-2000 503.3.1, 803.2.1
Standard
reference
number
136—1993 (RA 2001)
146-1998
13256-1 (1998)
55—1992
90.1—2001
ASHRAE— 1999
ASHRAE— 2001
ASHRAE— 2000
American Society of Mechanical Engineers
Three Park Avenue
New York, NY 10016-5990
Standard
reference
number
Title
Referenced
in code
section number
A112.18.1-2000
PTC 4.1 -1964
Plumbing Fixture Fittings.
Steam Generating Units . .
504.6.1
. Table 803.2.2(5)
ASTM International
100 Barr Harbor Drive
WestConshohocken, PA 19428-2859
Referenced
in code
Title section number
Standard Test Method for Steady-State Thermal Performance of Building Assemblies by
Means of a Guarded Hot Box 602.1.1.1
Standard Test Method for Steady-State Thermal Transmission Properties by Means of the
Heat Flow Meter Apparatus Table 503.3.3.3
Standard Test Method for Thermal Performance of Building Assemblies by Means of a Calibrated Hot Box 602.1.1.1
Standard Test Methods for Water Vapor Transmission of Materials 502.1.1, 602.1.7,
802.1.2
Test Method for Determining the Rate of Air Leakage Through Exterior Windows,
Curtain Walls and Doors Under Specified Pressure Differences Across the Specimen 502.1.3,
Table 502.1.4.1, 802.3.2, 802.3.7
Standard Test Method for Determining Air Leakage Rate by Fan Pressurization 402.2.3.9
Standard
reference
number
C 236— 93el
C 518— 98
C 976 - 90(1996)96el
E 96—00
E 283—99
E 779—99
Cooling Technology Institute
2611 FM 1960 West, Suite H-200
Houston, TX 77068-3730
Standard
reference
number
Title
Referenced
in code
section number
STD-201 (1996)
ATC-105 (1997)
Certification Standard for Commercial Water Cooling Towers .
Acceptance Test Code for Water Cooling Towers
. Table 803.3.2(6)
. Table 803.3.2(6)
198
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
REFERENCED STANDARDS
U.S. Department of Energy
c/o Superintendent of Documents
EU.S. Government Printing Office
Washington, DC 20402-9325
Standard Referenced
reference in code
number Title section number
10 CFR Part 430, Subpart B,
Appendix E (1998) Uniform Test Method for Measuring the Energy Consumption of
Water Heaters Table 504.2.1, Table 803.2.2(4), Table 804.2
10 CFR Part 430,
Subpart B, Appendix N (1998) Uniform Test Method for Measuring the Energy Consumption of Furnaces and Boilers Table 503.2, Table 803.2.2(5),
Table 804.2
10 CFR Part 430, Subpart B,
Test Procedures (1998) Energy Conservation Program for Consumer Products 202
ORNL/Sub-86-72143/1-88 Building Foundation Design Handbook Table 502.2, 502.2.1.5, 502.2.3.5
DOE/EIA— 0376
(Current Edition) State Energy Prices and Expenditure Report 806.2.3
II
Hydronics Institute, Division of the Gas Appliance Manufacturers Association
P.O. Box 218
Berkeley Heights, NJ 07054
Standard
reference
number
Title
Referenced
in code
section number
HBS
I=B=R - Testing and Rating Standard for Heating Boilers, 1989 Ed Table 803.2.2(5)
ICC
International Code Council, Inc.
5203 Leesburg Pike, Suite 600
Falls Church, VA 22041-3401
Referenced
in code
Title section number
International Building Code® 201 .3
ICC Electrical Code™ 201.3
International Existing Building Code™ 101.2
International Fire Code® 201.3
International Fuel Gas Code® 201.3
International Mechanical Code® 201.3, 202, 503.3.3.4, 503.3.3.4.1, 503.3.3.4.2, 803.2.5,
803.2.6, 803.2.8.1, 803.2.8.1.1, 803.2.8.1.2, 803.3.4, 803.3.8.1
International Plumbing Code® 201.3
Standard
reference
number
IBC— 03
ICC EC— 03
IEBC— 03
IFC— 03
IFGC— 03
IMC— 03
IPC— 03
I]
A
Illuminating Engineering Society of North America
1 20 Wall Street, 17th Floor
New York, NY 10005-4001
Standard
reference
number
Title
Referenced
in code
section number
90.1-2001
Energy Standard for Buildings Except Low-Rise Residential Buildings 701.1, 801.2, 802. 1 , 802.2
National Fenestration Rating Council, Inc.
8484 Georgia Avenue
Suite 320
Silver Spring, MP 20910
Standard
reference
number
Title
Referenced
in code
section number
100—01
Procedure for Determining Fenestration Product U-Factors .
102.5.2,601.3.2,
601.3.2.1
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
199
REFERENCED STANDARDS
200—01
400-01
NFRC— continued
Procedure for Determining Fenestration Product Solar Heat Gain Coefficients and
Visible Transmittance at Normal Incidence
Procedure for Determining Fenestration Product Air Leakage
102.5.2,601.3.2,601.3.2.1
. Table 502.1.4.1, 601.3.2.2, 802.3.1
NOAA
National Oceanic and Atmospheric Administration
U.S. Department of Commerce
c/o Superintendent of Documents
U.S. Government Printing Office
Washington, DC 20402-9325
Standard
reference
number
Title
Referenced
in code
section number
CLIM 81-2
Annual Degree Days To Selected Bases 1961-1990 Normals Table 302.1, 402.2.3.7
Sheet Metal and Air Conditioning Contractors National Association, Inc.
CJ ]\/T A f^ T^ A 402 1 Lafa y ette Center Drive
Chantilly.VA 20151-1209
Standard
reference
number
Title
Referenced
in code
section number
SMACNA— 85
HVAC Air Duct Leakage Test Manual 402.2.3.8, 803.3.6
UL
Underwriters Laboratories Inc.
333 Pfingsten Road
Northbrook, IL 60062-2096
Referenced
in code
Title section number
Closure Systems for Use with Rigid Air Ducts and Air Connectors
— with Revisions through December 1998 503.3.3.4.3, 803.2.8
Closure Systems for Use with Flexible Air Ducts and Air Connectors
—with Revisions through December 1998 503.3.3.4.3, 803.2.8
Oil-Fired Central Furnaces — with Revisions through January 1999 Table 803.2.2(4)
Oil-Fired Unit Heaters— with Revisions through January 1999 Table 803.2.2(4),
Standard
reference
number
181 A— 98
181B— 95
727—98
731—95
WDMA
Window and Door Manufacturers Association
1400 East Touhy Avenue, Suite 470
Pes Plaines, IL 60018
Standard
reference
number
Title
Referenced
in code
section number
101/I.S.2— 97
101/I.S.2/NAFS— 02
Voluntary Specifications for Aluminum, Vinyl (PVC) and Wood Windows and
Glass Doors
Voluntary Performance Specification for Windows, Skylights and Glass Doors.
. Table 502.1.4.1, 601.3.2.2, 802.3.1
802.3.1
200
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
The sections and construction details in Details 502.2.1.5(1) and 502.2.1.5(2), and Tables 502.2.3.1(1), 502.2.3.1(2), 502.2.3.1(3),
502.2.3.2, 502.2.3.3, 502.2.3.5 and 502.2.3.6 are intended to be representative and not all-inclusive. Adopting agencies are encour-
aged to add construction details and sections appropriate to their specific areas. Utilization of these tables should be correlated with
local industry group practices and model code research recommendations.
>y^i
i
A =12" MINI
For SI: 1 inch = 25.4 mm.
DETAIL 502.2.1 .5(1)
CRAWL SPACE WALL INSULATION— INSTALLATIC
^^^^
J
'A
555:
/\
I
_ i
>\^x^>x^xS>x^>5
Z
For SI: 1 inch = 25.4 mm.
4
DETAIL 502.2,
CRAWL SPACE WALL INSULAT1C
1.5(2)
«— INS'
5.2
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
201
APPENDIX
TABLE 502.2.3.1(1)
WALL ASSEMBLIES
(U„ selected shall not exceed the U determined by Section 502.2.3.1 for any wall section)
WALL DETAILS 3
TYPE AND
SPACING OF
FRAMING
(nominal)
fl-VALUE OF
CAVITY
INSULATION
R-VALUE OF
SHEATHING
U b
Typical schedules:
Typical interior finish —
1 . Gypsum wallboard;
2. Lath and plaster; or
3. 3 / g " minimum wood paneling
Typical exterior finish —
1. Stucco;
2. Wood or plywood siding; or
3. Brick veneer
WOOD STUD CONSTRUCTION
4" Studs
@ 16" o.c.
11
noninsulating
0.085
13
noninsulating
0.076
13
3
0.064
13
5
0.056
13
7
0.051
15
noninsulating
0.070
L EXTERIOR FINISH
15
3
0.059
15
5
0.053
INSULATION
15
7
0.048
6" Studs
@ 16" o.c.
19
noninsulating
0.058
4 bHEAl HINCa
19
3
0.050
19
5
0.046
19
7
0.041
21
noninsulating
0.052
21
3
0.046
21
5
0.042
21
7
0.038
6" Studs
@ 24" o.c.
21
noninsulating
0.050
STEEL STUD CONSTRUCTION
4" Studs
@ 16" o.c.
11
noninsulating
0.14
EXTERIOR FINISH
SHEATHING
13
noninsulating
0.13
6" Studs
@ 16" o.c.
19
noninsulating
0.11
4" Studs
@ 24" o.c.
11
noninsulating
0.12
13
noninsulating
0.11
6" Studs
@ 24" o.c.
19
noninsulating
0.10
For SI: 1 inch = 25.4 mm.
a. Details shown are for insulation and are not complete construction details.
b. U„ calculated based on the ASHRAE Fundamentals Handbook 2001 .
202
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
(U w selected shall not exceed She i
3LE 502.2.3.1(2)
SSEMBLIES
determined by Section 502.2.3.1 for any wall section)
WALL DETAILS' | fi-VALUE OR TYPE
U„AND B FOR WALL THICKNESS LISTED 3
PLAIN CONCRETE MASONRY BLOCK CONSTRUCTION
6"
8"
10"
12"
Plain block wythe
No insulation, no interior finish
U„
0.37
2.70
0.33
3.03
0.31
3.23
0.30
3.33
Loose fill in cores, no interior finish
Ro
0.18
5.56
0.13
7.69
0.11
9.09
0.09
11.11
Interior finish: 7 2 " gypsum
board on furring strips
No insulation, interior finish
Ro
0.24
4.17
0.23
4.35
0.22
4.55
0.21
4.76
No insulation, foil-backed gypsum board interior finish
Ro
0.18
5.56
0.17
5.88
0.16
6.25
0.16
6.25
Cavity insulation and interior
finish: V 2 " gypsum board on
furring strips
1" extruded polystyrene, interior finish
Ro
0.13
7.69
0.13
7.69
0.12
8.33
0.12
8.33
2" expanded polystyrene, interior finish
R„
0.09
11.11
0.09
11.11
0.09
11.11
0.09
11.11
2" extruded polystyrene, interior finish
u w
Ro
0.08
12.50
0.08
12.50
0.08
12.50
0.08
12.50
2" polyisocyanurate, interior finish
u w
Ro
0.06
16.67
0.06
16.67
0.06
16.67
0.06
16.67
Interior finish: V 2 " gypsum
board over fibrous batt or loose
fill between studs out from wall
R-ll, 2 x 3 studs, interior finish
Ro
0.07
14.29
0.07
14.29
0.07
14.29
0.07
14.29
R- 13, 2 x 3 studs, interior finish
Ro
0.06
16.67
0.06
16.67
0.06
16.67
0.06
16.67
R- 19, 2 x 4 studs, interior finish
u w
Ro
0.05
20.00
0.05
20.00
0.05
20.00
0.05
20.00
MULTI-WYTHE WALLS
U M AND R FOR WALL THICKNESS LiSTED b ' c ' d ' e
8"
10"
12"
14"
Plain block and clay wythes
No insulation,
no interior finish
Ro
0.32
3.13
0.26
3.85
0.24
4.17
0.22
4.55
Loose fill in cavity,
no interior finish
u w
Rn
NA
NA
0.12
8.33
0.12
8.33
0.11
9.09
Cavity insulation and interior
finish: V 2 " gypsum board on
furring strips
Loose fill,
interior finish
R
0.11
9.03
0.10
10.00
0.10
10.00
0.10
10.00
Loose fill foil-backed gypsum board,
interior finish
u w
Ro
0.10
10.00
0.09
11.11
0.09
11.11
0.09
11.11
1" expanded polystyrene in cavity,
interior finish
R n
NA
NA
0.13
7.69
0.12
8.33
0.12
8.33
2" expanded polystyrene in cavity,
interior finish
Ro
NA
NA
0.08
12.50
0.08
12.50
0.08
12.50
1" extruded polystyrene in cavity,
interior finish
u„
R n
NA
NA
0.11
9.09
0.11
9.09
0.11
9.09
2" extruded polystyrene in cavity,
interior finish
Ro
NA
NA
0.07
14.29
0.07
14.29
0.07
14.29
1" polyisocyanurate in cavity,
interior finish
u w
Ro
NA
NA
0.08
12.50
0.08
12.50
0.08
12.50
2" polyisocyanurate in cavity,
interior finish
Ro
NA
NA
0.05
20.00
0.05
20.00
0.05
20.00
T'expanded polystyrene in cavity foil-backed gypsum board,
interior finish
u w
Ro
NA
NA
0.09
11.11
0.09
11.11
0.09
11.11
1" extruded polystyrene in cavity foil-backed gypsum board,
interior finish
u w
Ro
NA
NA
0.08
12.50
0.08
12.50
0.08
12.50
For SI: 1 inch = 25.4 mm, 1 pound per cubic foot = 0.1572 kg/m 3 .
a. The U w values are for blocks made with concrete having a density of 80 pounds per cubic foot; for other densities, the U w must be calculated based on the #- values
provided in NCMA TEK 6-1 A or the ASHRAE Fundamentals Handbook 2001.
b. 8" composite wall: 4" dense outer wythe and hollow-unit inner wythe.
c. 10" cavity wall: 4" dense outer wythe, 2" air space and 4" hollow-unit inner wythe.
d. 12" cavity wall: 4" dense outer wythe, 2" air space and 6" hollow-unit inner wythe.
e. 14" cavity wall: 4" dense outer wythe, 2" air space and 8" hollow-unit inner wythe.
f. Refer to drawings in Tables 502.2.3.1(1) and 502.2.3.1(3).
NA = Not Applicable.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
203
APPENDIX
TABLE 502.2.3.1(3)
WALL ASSEMBLIES
(U w selected shall not exceed the U determined by Section 502.2.3.1 for any wall section)
WALL DETAILS"
Interior finish '/ 4 " gypsum board applied on furring strips
ff-VALUE OF INSULATION
BRICK MASONRY CONSTRUCTION WITH LOOSE FILL
Solid grout in space
z?
z
2" space with loose fill
R-4
4" space with loose fill
R-8
0.38
0.16
0.10
2.63
6.25
10.00
BRICK MASONRY CONSTRUCTION WITH INSULATION
z
-INTERIOR FINISH
11
0.12
0.09
0.07
8.33
11.11
14.29
NORMAL-WEIGHT CONCRETE CONSTRUCTION
NORMAL WEIGHT
CONCRETE
INTERIOR FINISH
INSULATION
11
0.18
0.13
0.12
0.08
5.56
7.69
8.33
12.50
LIGHTWEIGHT CONCRETE CONSTRUCTION
LIGHTWEIGHT
CONCRETE
INTERIOR FINISH
INSULATION
11
0.17
0.12
0.11
0.08
8.33
9.09
12.50
INSULATING CONCRETE FORM SYSTEM (ICF) C
12
15
EXTERIOR FINISH
INSULATION
Tfrr
CONCRETE
INTERIOR FINISH
INSULATION 3
16
17
20
22
0.07
0.06
0.06
0.05
0.05
0.04
13.55
16.55
17.55
18.55
21.55
23.55
For SI: I inch = 25.4 mm.
a. The W-value listed is the sum of the values for the exterior and interior insulation layers.
b. The manufacturer shall be consulted for the U w and R values if the insulated concrete form system (ICF) uses metal form ties to connect the interior and exterior
insulation layers.
c. These values shall be permitted to be used for concrete masonry wall assemblies with exterior and interior insulation layers.
d. Details shown are for insulation and are not complete construction details.
204
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
APPEI
TABLE 502.2.3.2
ROOF/CEILING ASSEMBLIES
(U r selected shall not exceed the value specified in Section 502.2.3.2)
RQOFDETAILS a ' b ' c
R-VALUE OF
INSULATION'
U,
«c
Typical interior finish —
1. Gypsum wallboard; or
2. Lath & plaster
CEILING JOIST
19
0.050
20.00
^^ ':
22
0.040
25.00
30
0.030
33.33
38
0.025
40.00
AIR SPACE AND —
-, i BUILT-UP ROOF
19
0.050
20.00
VENTILATION DESIRABLE
22
0.040
25.00
ffkfmmmM
30
0.030
33.33
■
/ / ^ INTERIOR FINISH
CEILING JOIST OR RAFTERS '
38
0.025
40.00
CATHEDRAL-TYPE CEILING
Wood decking
9
0.080
12.50
RIGID INSULATION ^ ^j^^^^^^J 1 ^ \
Plywood
WOOD OR PLYWOOD SHEATHING
10
0.080
12.50
19
0.050
20.00
— BEA
4t
30
0.030
33.33
a. Details shown are for insulation and are not complete construction details.
b. Skylights not exceeding one percent of the roof are permitted.
c. Insulation installed between joints.
TABLE 502.2.3.3
FLOOR ASSEMBLIES
(U, selected shall not exceed the U specified in Section 502.2.3.3)
FLOOR DETAILS 3
ff-VALUE OF
INSULATION
U r
SUB-FLOOR
No insulation
0.32
0.11
11
0.08
19
0.05
3.13
9.09
12.50
20.00
a. Details shown are for insulation and are not complete construction details.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
205
APPENDIX
TABLE 502.2.3.5
CRAWL SPACE FOUNDATION WALL ASSEMBLIES
(lAfactor selected shall not exceed the (/-factor determined by Section 502.2.3.5)
WALL DETAILS 3
R-VALUE OF INSULATION
U-FACTOR
WOOD FOUNDATION
w
11
13
19
0.10
0.09
0.06
CONCRETE/MASONRY FOUNDATION— INTERIOR INSULATION
10
11
13
19
0.15
0.08
0.08
0.07
0.05
CONCRETE/MASONRY FOUNDATION— EXTERIOR INSULATION
10
15
0.20
0.15
0.08
0.06
INSULATING CONCRETE FORM SYSTEM (ICF) b - cd
12
15
16
17
20
22
0.08
0.06
0.06
0.06
0.05
0.04
a. Details shown are for insulation and are not complete construction details.
b. The R- value listed is the sum of the values for the exterior and interior insulation layers.
c. The manufacturer shall be consulted for the {/-factor if the insulated concrete form system (ICF) uses metal form ties to connect the interior and exterior insulation
Jayers.
d. These values shall be permitted to be used for concrete masonry wall assemblies with exterior and interior insulation layers.
206
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
TABLE 502.2.3.6
BASEMENT FOUNDATION WALL ASSEMBLIES
(OMfactor selected shall not exceed the U-factor determined by Section 502.2.3.6)
WALL DETAILS 3
B-VALUE OF INSULATION
U-FACTOR
WOOD FOUNDATION
m
a
13
19
0.08
0.08
0.06
CONCRETE/MASONRY FOUNDATION— INTERIOR INSULATION
SI
^§S
\ X A\ X
i
^
6.5
10
11
19
0.15
0.12
0.08
0.08
0.06
CONCRETE/MASONRY FOUNDATION— EXTERIOR INSULATION
3
K^T
W$l
10
15
0.20
0.15
0.09
0.06
INSULATING CONCRETE FORM SYSTEM (ICF) b - c ' d
12
15
16
17
20
22
0.07
0.06
0.06
0.05
0.05
0.04
a. Details shown are for insulation and are not complete construction details.
b. The R- value listed is the sum of the values for the exterior and interior insulation layers.
c. The manufacturer shall be consulted for the (7-factor if the insulated concrete form system (ICF) uses metal form ties to connect the interior and exterior insulation
layers.
d. These values shall be permitted to be used for concrete masonry wall assemblies with exterior and interior insulation layers.
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
207
APPENDIX REFERENCED STANDARDS
ASHRAE-2001 ASHRAE Fundamentals Handbook Tables502.2.3.1(l)and502.2.3.1(2)
NCMATEK6-1A R- Values of Multi- Wythe Concrete Masonry Walls Table 502.2.3. 1(2)
208 2003 INTERNATIONAL ENERGY CONSERVATION CODE®
h
Defined 202
Requirements 101.2.2.2, 502.2.5
MINISTRATION AND
ENFORCEMENT .................... Chapter 1
R ECONOMIZERS ............ 803.2.6, 803.3.3.5
Defined 202
Requirements 402.1.3.10
.BR LEAKAGE ........... 502.1 .4, 601 .3.2.2, 802.3
IR SYSTEM BALANCING. ..... 503.3.3.7, 803.3.8.1
.IR TRANSPORT FACTOR
Defined 202
Requirements 503.3.3.6
3NATE MATERIALS 103
JNUAL FUEL UTILIZATION EFFICIENCY
Defined 202
'PROVED
Defined 202
ITQMATIC
Defined 202
e
BALANCING 503.3.3.7, 803.3.8
BALLASTS 805.3
BASEMENT WALLS
Defined 202
Requirements 402.2.3.10, Table 502.2,
Figure 502.2(6), 502.2.1.6, 502.2.3.6,
Tables 502.2.4(1-9), 502.2.4.9, Table 602.1,
602.1.5, 802.1.1.2, Tables 802.2(1-37), 802.2.8
BELOW-GRADE WALLS (§®<g BASEMENT WALLS)
BI-LEVEL SWITCHING 805.2.2.1
BOILERS ....... Table 503.2, Table 803.2.2(5), 804.2
BUILDING ENVELOPE
Compliance documentation 104, 402.5, 806.5
Defined 202
Requirements 402, 502, 602, 802
System performance criteria. . . . 402.2.1, 402.2.3.3,
806.4
System performance method 402, 806
CLIMATE ZONES .................... Table 302.1
By state Figures 902.1(1-51)
Envelope requirements Tables 802.2(1-37)
COEFFICIENT OF PERFORMANCE (COP)
Defined 202
COMBINED SERVICE WATER HEATING AND SPACE
G 504.2.2
Compliance 101.3.2
Defined 202
Design by acceptable practice Chapter 8
Design by referenced standard Chapter 7
Design by total building performance 806
SYSTEMS 503.3.3.7, 803.3.8
Manuals 803.3.8.3
1MPLIANCE AND ENFORCEMENT 101.4
INDITIONED FLOOR AREA
Defined 202
INOETIQNED SPACE
Defined 202
N OF WATER 504.6
Capabilities 503.3.2.2, 803.3.3
Economizers 803.2.6, 803.3.3.5
Heat pump 803.3.3.1 .1
Heating and cooling 402.2.3.4,
Table 402.2.3.4, 803.3.3
Humidity 503.3.2.4, 803.2.3.3
Hydronic systems 803.2.4, 803.3.3.7
Lighting 805.2
Off hour 803.3.3.3
Service water heating . . . 504.3, 504.4, 804.2, 804.6
Shutoff dampers 803.2.7, 803.3.4
Temperature 503.3.2.1, 803.2.3.1
Variable air volume systems 803.3.3.6, 803.3.4
Ventilation 803.2.5, 803.3.5
SOLING WITH OUTDOOR AIR . . 803.2.6, 803.3.3.5
?AWL SPACE WALLS
Defined 202
Requirements 502.1.5, 502.2, Table 502.2,
Figure 502.2(5), 502.2.3.5,
Tables 502.2.4(1-9), 502.2.4.12,
Table 602.1, 602.1.7
ING AND WEATGiERSTRIPPING . . . 502.1.4.2,
602.1.10,802.3.2
CIRCULATING PUMPS 504.4, 804.6
CIRCULATING SYSTEMS 504.3, 504.4,
504.7, 804.4
CLIMATE DATA 302
IADBAND 202, 503.3.2.2, 803.3.3.2
EFDNITIONS Chapter 2
EGREE DAY COOLING
Defined 202
EGREE DAY HEATING
Defined 202
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
209
INDEX
DESIGN CONDITIONS Chapter 3
DETAILS Appendix
DUAL DUCT VAV 803.3.4.2
DUCTS
Defined 202
Insulation 503.3.3.3, 803.2.8
Sealing 503.3.3.4, 803.2.8, 803.3.6, 805.1,
DWELLING UNIT
Defined 202
ECONOMIZER
Air 803.2.6, 803.3.3.5
Defined 202
Requirements 803.2.6, 803.3.4.3, 803.3.3.5
Water 803.3.3.5
ELECTRICAL POWER AND LIGHTING 505, 805
ENERGY ANALYSIS, ANNUAL '
Defined 202
Documentation 402.6, 806.5
Requirements 402.1 , 806
ENERGY EFFICIENCY RATIO (EER)
Defined 202
ENVELOPE, BUILDING
Defined 202
ENVELOPE DESIGN
PROCEDURES 502.2.1 , 502.2.2,
502.2.3, 502.2.4, 602, 802
EQUIPMENT EFFICIENCIES 503.2, 504.2, 603, 803.2,
803.3.2, 804.2, 806.3.1, 806.4.1
EQUIPMENT PERFORMANCE REQUIREMENTS
Boilers Table 803.2.2(5)
Chillers, nonstandard Tables 803.3.2(1-2)
Condensing units Table 803.3.2(1)
Economizer exception Table 803.2.6
General, residential Table 503.2
Heat rejection equipment Table 803.3.2(6)
Packaged terminal air conditioners
and heat pump Table 803.2.2(3)
Unitary air conditioners and
condensing units Table 803.2.2(1)
Unitary and applied heat pumps. . . Table 803.2.2(2)
Warm air duct furnaces and
unit heaters Table 803.2.2(4)
Warm air furnaces Table 803.2.2(4)
Warm air fumaces/air-conditioning
units Table 803.2.2(4)
Water chilling packages,
standard Table 803.3.2(2)
Water heating 504.2, Table 504.2.1, 804.2
EXEMPT BUILDINGS 101.2.1
EXISTING BUILDINGS 101.2.2
EXTERIOR LIGHTING 805.5
EXTERIOR SHADING 402.1.3.1.3, 802.2.3
Defined 202
Thermal performance 402.2.1.1, 502, 802
F
FENESTRATION 102.5, 402.2.1.2, 601.3.2
Defined 202
Rating and labeling 102.5, 601.3.2
FURNACE EFFICIENCY Table 503.2,
Table 803.2.2(4)
Defined 202
JESTROOMS ....................... 805.2.2.1
.AZING AREA
Defined 202
Requirements 402.2.1.3, 502.2, 502.2.1,
502.2.2, 502.2.3, 502.2.4, 502.2.5
Defined 202
Requirements 502.2.1 .1 .2,
Tables 502.2.1.1.2(1-3), 502.2.4.17,
Tables 502.2.4.17(1-2)
■AT PUMP Table 503.2, Tables 803.2.2(2-3)
Defined 202
;AT TRAPS 504.7, 804.4
Defined 202
lATING AND COOLING CRITERIA Table 502.2
LOADS 402.4.1, 402.5.6, 503.3.1,
803.2.1,803.3.1
IOT WATER 504.4, 804.2
Annual energy performance 402.2.3.6, 402.4
Piping insulation 504.5, 804.5
System controls 504.3, 504.4, 804.2, 804.6
Defined 202
Requirements 503.3.2.4, 803.2.3.2, 803.3.3.1
'DRQN1C SYSTEM BALANCING 803.3.8.2
3ENTIFDCATPON (MATERIALS, EQUIPMENT
AMD SYSTEM) 102.1
VIDJRECTLY CONDITIONED SPACE
(se© CONDITIONED SPACE)
^FILTRATION, AIR
LEAKAGE 402.2.3.9, 502.1 .4, 802.3
Defined 202
^SPECTIONS 105
210
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
INSULATION
Identification 102.5
Installation 102.4, 601.3.1
INSULATING SHEATHING
Defined 202
Requirements 502.2.4.1, 502.2.4.16
INTEGRATED PART LOAD VALUE
Defined 202
INTERIOR LIGHTING POWER 805.5
L
LABELED
Defined 202
Requirements 102.3, 102.5.2, 601.3.2, 601.3.3
LIGHTING POWER
Design procedures 805.5.2
Exterior connected 805.6, 806.2.8
Interior connected . . . 805.5, Table 805.5.2, 806.4.7
Manufacturer's information 102.3, 601.3.3
LIGHTING SYSTEMS 505, 605, 805
Controls, additional 805.2.2
Controls, exterior 805.2.3
Controls, interior 805.2.1
Decorative Table 805.5.2
For visual display terminals Table 805.5.2
Guestrooms 805.2.2.3
Line voltage 805.5.1 .4
Merchandise Table 805.5.2
Plug-in busway 805.5.1 .4
Track 805.5.1.4
LISTED
Defined 202
LOW-VOLTAGE LIGHTING
Defined 202
Requirements 805.4.1 .2
LUMINADRE
Defined 202
M
MANUALS 803.3.8.3
MATERIALS AND EQUIPMENT 102, 601.3
MECHANICAL SYSTEMS AND
EQUIPMENT 503, 603.3, 803
MECHANICAL VENTILATION 503.3.3.5, 803.5
Defined 202
MOISTURE CONTROL 502.1.1, 802.1.2
MULTSFAMLY DWELLING
Defined 202
MULTIPLE SINGLE-FAMILY DWELLING
(TOWNHOUSE)
Defined 202
IPLE ZONE SYSTEMS 803.3.4
804.4
IONDEPLETABLE/RENEWABLE ENERGY
Defined 202
Requirements 806.2.4
Defined 202
Requirements 101.2.2.4, 101.2.3
OCCUPANCY SENSORS 805.2.1.1
OFF-HOUR, CONTROLS 803.3.3.3
OPAQUE AREAS
Defined 202
ORIENTATION 402.2.2.1, 402.2.3.1.1, 402.5.3
OVERHANG, PROJECTION FACTOR 802.2.3
OZONE DEPLETION FACTOR
Defined 202
P
PACKAGED TERMINAL AIR CONDITIONER (PTAC)
Defined 202
Requirements Table 803.2.2(3)
PACKAGED TERMINAL HEAT PUMP
Defined 202
Requirements Table 803.2.2(3)
PARALLEL PATH CORRECTION
FACTORS 502.1.1.1, Table 502.2.1.1.1
ICELL 805.2.2
\1SULAT10N 503.3.3.1, 503.3.3.2,
504.5, 803.2.9, 803.3.7, 804.5
PLANS AND SPECIFICATIONS! 04
POOL COVERS 504.3.2
PROJECTION FACTOR 802.2.3
PROPOSED DESIGN
Defined 202
Requirements 402, 502.2.2, 806
PUMPING SYSTEMS 504.3, 504.4,
803.3.3.7.1,803.3.8.2
LVALUE (a@@ THERMAL RESISTANCE)
RECOOLiNG 803.3.4
REFERENCED STANDARDS 107, Chapter 10
REHEATING 803.3.4
RENEWABLE/NONDEPLETABLE ENERGY
SOURCES 806.2.4
Defined 202
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
211!
INDEX
REPAIR
Requirements 101.2.2.2
Defined 202
RESET CONTROL
803.3.3.7.4
RESIDENTIAL BUILDINGS
Compliance 101.4.1
Defined 202
Design by component performance Chapter 5
Design by system analysis and
renewable sources Chapter 4
Design using simplified prescriptive
requirements Chapter 6
ROOF ASSEMBLY
Defined 202
Requirements Figure 502.2(2), 502.2.1.2,
502.2.3.2, Tables 502.2.4(1-9),
502.2.4.7, Table 602.1, 602.1.2
SCOPE 101.2
SCREW LAMP HOLDERS
Defined 202
Requirements 805.5.1 .1
SEASONAL ENERGY EFFICIENCY RATIO
Defined 202
SERVICE WATER HEATING
Defined 202
Requirements 504, 604, 804, 806.2.8, 806.3.1
SHADING ...... 402.2.3.1.2, 402.2.3.1.3, 402.2.3.1.4
Projection factor 802.2.3
SHOWER HEADS 504.6.1
SHUTOFF DAMPERS 503.3.3.5, 803.3.3.4
SIMULATION TOOL
Defined 202
Requirements 402.4.7, 806.2.1
SINGLE ZONE 503.1, 803.2
SIZING
Equipment and system 803.2.1, 803.3.1.1
SKYLIGHTS 402.2.1.4, 502.2.1.22.1,
602.4, 502.2.5
Defined 202
Maximum exempt area 502.2.4.4, 802.2.5
SLAB-EDGE INSULATION 102.4.1,
Figure 502.2(3), 502.2.1.4, 502.2.3.4,
Tables 502.2.4(1-9), 502.2.4.10, 502.2.4.11,
Table 602.1, 602.1.6, Tables 802.2(1-37), 802.2.7
SOLAR HEAT GAIN COEFFICIENT (SHGC). . . 102.5.2
STANDARD DESIGN
Defined 202
STANDARDS, REFERENCED 107, Chapter 10
STEEL FRAMING 502.2.1.1.1, 502.2.1.2,
502.2.1.3, 502.2.3.1, 502.2.3.2, 502.2.3.3,
502.2.4.16, Tables 502.2.4.16(1-2), 502.2.4.18,
Tables 502.2.4.18(1-2), 502.2.4.19, Table 502.2.4.19
STANDARD TRUSS 502.2.4.5, 602.1.2
Defined 202
SUNROOM ADDITION 502.2.2.5
Defined 202
SWIMMING POOLS 504.3
SYSTEMS ANALYSIS 402, 806
T
TANDEM WIRING 805.3
TERMITE
INFESTATION Table 502.2, Figure 502.2(7)
THERMAL ISOLATION ....... 502.2.5, Table 502.2.5
Defined 202
THERMAL
MASS 502.2.1.1.2, Tables 502.2.1.1.2(1-3),
502.2.4.17, Tables 502.2.4.17(1-2)
THERMAL RESISTANCE (R)
Defined 202
THERMAL TRANSMITTANCE (U)
Defined 202
TOTAL BUILDING PERFORMANCE
Commercial 806
Residential 402
TOWNHOUSE (see MULTIPLE SINGLE-FAMILY
DWELLING)
TYPE A-1 AMD A-2 RESIDENTIAL BUILDINGS
(see RESIDENTIAL BUILDINGS)
U
0-FACTQR (see THERMAL TRANSMITTANCE)
¥
VAPOR RETARDER 502.1.1, 802.1.2
VARIABLE AIR VOLUME
SYSTEMS (VAV) 803.3.3.6, 803.3.4
VENTILATION 503.3.3.5, 803.2.5, 803.3.5
Defined 202
W
WALLS (see EXTERIOR WALLS AND ENVELOPE,
BUILDING)
WALLS ADJACENT TO UNCONDITIONED
SPACE 802.1.1.3, Tables 802.2(1-37), 802.2.9
WATER CONSERVATION 504.6
WATER ECONOMIZER 803.3.3.5
WATER HEATING .... 504, 604, 804, 806.2.8, 806.3.1
WINDOW AREA (see GLAZING AREA)
WINDOW PROJECTION FACTOR
Defined 202
Requirements 802.2.3
WINDOW-TQ-WALL RATIO
(see GLAZING AREA)
212
2003 INTERNATIONAL ENERGY CONSERVATION CODE®
INDEX
WIRING, TANDEM 805.3
I
ZONE
Defined 202
Requirements Table 402.2.3.4, 503.3.2.1,
803.3.3, 803.3.4
ZONE ISOLATION 803.3.4
2003 INTERNATIONAL ENERGY CONSERVATION CODE® 211 3
214 2003 INTERNATIONAL ENERGY CONSERVATION CODE®
EDITORIAL CHANGES - THIRD PRINTING
Page 16, 402.4.1: Last line now reads . . . of effect of factors specified in Section 402.5.
Page 17, 502.1.3: Item 3, line 5 now reads . . . tested at 1.57 pounds per square foot (psf) (75 Pa)
Page 18, Table 502.2: Columns 3 and 4 now read . . . DETACHED ONE- AND TWO-FAMILY DWELLINGS and
GROUP R-2, R-4 OR TOWNHOUSES respectively.
Page 47, Table 602.1.1.1(1): Column 2, Zone 15 now reads . . . 7,000 - 8,499
Page 58, 802.3.2: Line 5 now reads . . . square foot (psf) (75 Pa)
Page 59, 802.3.7: Item 3, line 5 now reads ... be tested at 1.57 psf (75 Pa)
2003 INTERNATIONAL ENERGY CONSERVATION CODE® 215
218 2003 INTERNATIONAL ENERGY CONSERVATION CODE®
ERRATA TO THE
2003 INTERNATIONAL ENERGY CONSERVATION CODE
Errata to the Second Printing, April 2003
(Updated November 3, 2003)
402.4.1 : Last line now reads ... of effect of factors specified in Section 402.5.
502.1.3: Item 3, line 5 now reads . . . tested at 1 .57 pounds per square foot (psf) (75 Pa)
Table 502.2: Columns 3 and 4 now read . . . DETACHED ONE- AND TWO-FAMILY DWELLINGS
and GROUP R-2, R-4 OR TOWNHOUSES respectively.
Table 602.1.1.1(1): Column 2, Zone 15 now reads . . . 7,000 - 8,499
802.3.2: Line 5 now reads . . . square foot (psf) (75 Pa)
802.3.7: Item 3, line 5 now reads ... be tested at 1 .57 psf (75 Pa)
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